List of triplanes

This is a list of aircraft types having triplane wings.

! Type ! Country ! Date ! Role ! Status ! Notes
 * Albatros Dr.I || Germany || 1917 || Fighter || Prototype || Based on the Albatros D.V biplane.
 * Albatros Dr.II || Germany || 1918 || Fighter || Prototype || Based on the Albatros D.X biplane.
 * American Flea || USA || data-sort-value="1939.5"|c. 1939 || Private || Homebuilt || Triplane variant of the Mignet Pou du Ciel. Lower wing plane is all-moving ailerons.
 * Armstrong Whitworth F.K.5 || United Kingdom || 1915 || Fighter || Prototype || Never flown. Middle wing longer span than the others.
 * Armstrong Whitworth F.K.6 || United Kingdom || 1916 || Fighter || Prototype || Middle wing longer span than the others.
 * Astoux-Vedrines || France || data-sort-value="1916.5"|c. 1916 || Experimental || Prototype || Wing incidence could be varied in flight.
 * Austin Osprey || United Kingdom || 1918 || Fighter || Prototype ||
 * Aviatik 30.24 || Austria-Hungary || 1917 || Fighter || Prototype || Based on the Aviatik (Berg) D.I biplane.
 * Avro 547 || United Kingdom || 1920 || Transport || Prototype || 2 built. Based on the Avro 504, with a third wing added.
 * Battaille Triplane || Belgium || 1911 || || Prototype || Designed by César Battaille. Several short flights or hops.
 * Bell Oionus I || Canada || 1910 || Experimental || Prototype || Triplane variant of Bell's octahedral wing. Flown once.
 * Berliner Helicopter No.5 || USA || 1923 || Experimental || Prototype || In 1923, the Helicopter incorporated triplane wings to allow for gliding in case of an engine failure.
 * Besson H-3 || France || 1921 || Private || || or Besson MB.12
 * Besson H-5 || France || 1922 || Transport flying boat || Prototype ||
 * Besson H-6 || France || 1921 || Patrol || || Mailplane. Lower wing the largest and top wing the smallest.
 * Besson LB || France || 1919 || Patrol || || Flying boat
 * Besson HB.2 || France || ||  ||  ||
 * Besson MB-10 || France || ||  ||  ||
 * Besson MB-11 || France || ||  ||  ||
 * Besson Hydravion école || France || 1919 || ||  || Flying boat, exhibited at the 1919 Paris Aero Show.
 * Blackburn Triplane || United Kingdom || 1917 || Fighter || Prototype || Pusher propeller and boom-mounted empennage to allow an upwards-firing 2-pounder recoilless gun.
 * Boeing GA-1 || USA || 1920 || Attack || Production || Heavily armoured twin. 10 ordered, not operational.
 * Bousson-Borgnis triplane || France || 1908 || || Bomber || Canard. Failed to fly.
 * Bristol Braemar || United Kingdom || 1918 || Bomber || Prototype || Mk II flown in 1919.
 * Bristol Pullman || United Kingdom || 1920 || Transport || Prototype || The Bristol Pullman 14-seat transport variant flew in 1920.
 * Bristol Tramp || United Kingdom || 1921 || Transport || Prototype || 2 built, never flown.
 * Caproni Ca.4 || Italy || 1914 || Bomber || Production || Military designation of a line of bombers which would also see airliner variants. Types include the Ca.40,41,42,43,48,51,52,58,59.
 * Caproni Ca.40 || Italy || 1914 || Bomber || Prototype || 3 built.
 * Caproni Ca.41 || Italy || 1918 || Bomber || Production || Re-engined Ca.40.
 * Caproni Ca.42 || Italy || 1918 || Bomber || Production || Re-engined Ca.41.
 * Caproni Ca.43 || Italy || 1918 || Bomber || Prototype || Floatplane variant of the Ca.4.
 * Caproni Ca.48 || Italy || 1919 || Transport || || Converted from surplus Ca.42.
 * Caproni Ca.49 || Italy || 1919 || Transport || Project || Seaplane.
 * Caproni Ca.51 || Italy || || Bomber ||  || Ca.42 variant with biplane tail and tail gun.
 * Caproni Ca.52 || Italy || 1918 || Bomber || Production || Ca.42 built for the RNAS. Six built.
 * Caproni Ca 53 || Italy || 1917 || Bomber || Prototype || 1 completed, never flown. Preserved in the Gianni Caproni Museum of Aeronautics.
 * Caproni Ca.54 || Italy || 1919 || Transport || || Conversion of the Caproni Ca 53.
 * Caproni Ca.55 || Italy || 1920 || Transport || || Seaplane derived from the Caproni Ca 54.
 * Caproni Ca.58 || Italy || || Transport ||  || Ca.48 re-engined with Fiat A.14 or Isotta Fraschini V.6.
 * Caproni Ca.59 || Italy || || Transport || Project || Designation of Ca.58 intended for customers outside Italy.
 * Caproni Ca.60 || Italy || 1921 || Transport || Prototype || The "Noviplano" was a triple tandem triplane which crashed on its maiden flight.
 * Caproni-Pensuti triplane || Italy || 1920 || Private || ||
 * Catron & Fisk CF-10 || USA || data-sort-value="1925.5"|c. 1925 || Transport || ||
 * Curtiss 18-T || USA || 1918 || Fighter || Production || Known variously as the "Wasp" and the "Kirkham".
 * Curtiss Autoplane || USA || 1917 || Private || Prototype || Flying car. Flew only short hops.
 * Curtiss BT || USA || 1917 || Utility || Prototype || Seaplane, referred to as the "Flying lifeboat" or "Baby T".
 * Curtiss Model FL || USA ||1917 || || Prototype || Flying boat comprising Model F hull with Model L wings.
 * Curtiss GS-1 || USA || 1918 || Fighter || Prototype || Floatplane.
 * Curtiss Model L || USA || 1916 || Trainer || Production || Landplane and floatplane variants.
 * Curtiss Model S || USA || 1917 || Fighter || Production || S-4 and S-5 were floatplanes.
 * Curtiss Model T || USA || 1916 || Patrol || Prototype || Flying boat. Known as the "Wanamaker"
 * Curtiss-Judson Triplane || USA ||1917 || Utility flying boat || Operational || Flying boat. Slightly enlarged triplane version of the standard Curtiss F-Boat.
 * Curiss-Cox racer || USA || 1921 || Private || Operational || Also called the "Cactus kitten", a one-off triplane conversion of Cox's "Texas wildcat".
 * Dorand 1908 triplane || France || 1908 || || Prototype || Military triplane.
 * Dufaux triplane || Switzerland || 1908 || Experimental || Prototype || Tandem triplane with biplane tail and tiltrotor. Failed to fly.
 * Dunne-Huntington Triplane || UK || data-sort-value="1910.5"|1910 or 1911 || Experimental || Prototype || Not strictly a triplane but a three-surface aircraft, having a pair of tandem wings with a third set above and between them, but referred to as a "triplane" by its designer, J. W. Dunne.
 * DFW T.34 II || Germany || 1917 || Fighter || Prototype ||
 * Ellehammer triplane || Denmark || 1907 || Experimental || Prototype || First powered triplane to fly.
 * Euler Dreidecker Type 1 || Germany || 1916 || Trainer || Prototype ||
 * Euler Dreidecker Type 2 || Germany || 1917 || Fighter || Prototype || Later modified as a biplane.
 * Euler Dreidecker Type 3 || Germany || 1917 || Fighter || Prototype || Later modified as a biplane.
 * Euler Dreidecker Type 4 || Germany || 1918 || Fighter || Prototype ||
 * Euler Dreidecker Type 5 || Germany || 1918 || Fighter || Prototype || Triplane variant of the Euler Vierdecker quadruplane.
 * Faccioli Triplane || Italy || 1909 || Experimental || Prototype || Crashed after a short hop.
 * Farman Voisin || France || 1908 || Experimental || Prototype || Original Voisin machine modified to a triplane.
 * Felixstowe Fury || United Kingdom || 1918 || Long-range flying boat || Prototype || Flying boat. Also known as the Porte Super-Baby
 * Fokker Dr.1 || Germany || 1917 || Fighter || Production || Braced variant of the V.4, first flown as the V.5
 * Fokker V.4 || Germany || 1917 || Fighter || Prototype || Cantilever wings.
 * Fokker V.6 || Germany || 1917 || Fighter || Prototype ||
 * Fokker V.8 || Germany || 1917 || Fighter || Prototype || Tandem design, having a triplane fore wing, biplane rear wing and monoplane tail stabiliser.
 * Friedrichshafen FF.60 || Germany || 1918 || Experimental || Prototype || Floatplane
 * Goupy No.1 || France || 1908 || Experimental || Prototype ||
 * Grade triplane || Germany || 1908 || Experimental || Prototype || Hans Grade. first German-built aeroplane to fly
 * Groos triplane || France || 1909 || Experimental || Prototype || Alfred Groos' second design was a triplane which failed to fly.
 * Hansa-Brandenburg CC Triplane || Germany || 1917 || Fighter || Prototype || Seaplane. One-off triplane variant of production biplane.
 * Hansa-Brandenburg L.16 || Germany || 1917 || Fighter || Prototype ||
 * Hansa-Brandenburg W.17 || Germany || 1917 || Fighter || Prototype || Seaplane. Cantilever bottom wing.
 * Labourdette-Halbronn H.T.1 || France || 1918 || Bomber || Prototype || 1 flown. Twin-hulled flying boat.
 * Labourdette-Halbronn H.T.2 || France || 1919 || Bomber || Prototype || 2 flown. Development of the H.T.1
 * Levy-Besson Alerte || France || 1917 || Patrol || Production || Flying boat. Centre wing longer than the others. 100 built, used for patrol and ASW bombing rather than the "Alerte" role.
 * Levy-Besson 450-hp || France || 1918 || ||  || Flying boat
 * Levy-Besson 300-hp || France || data-sort-value="1918.5"|c. 1918 || ||  || Flying boat. Under construction in 1918
 * Levy-Besson 500-hp || France || data-sort-value="1918.5"|c. 1918 || ||  || Flying boat never completed?
 * Levy-Besson High Seas || France || data-sort-value="1919.5"|c. 1919 || || Production || Flying boat. Production batch of 100 was cancelled after some had been completed. Top and centre wings of equal span, bottom wing shorter.
 * Levy Besson HB.2 || France || 1919 || ||  ||
 * LFG Roland D.IV || Germany || 1917 || Fighter || Prototype || Also known as the Dr. I.
 * Lloyd 40.15 || Austria-Hungary || 1917 || Fighter || Prototype ||
 * Lohner Typ A || Austria-Hungary || 1917 || Fighter || Prototype || Later redesignated the 111.04.
 * Mitsubishi 1MT || Japan || 1922 || Bomber || Production || Navy Type 10.
 * Morane-Saulnier TRK || France || 1915 || Bomber || Prototype || 1 built.
 * Naval Aircraft Factory Giant Boat || USA || 1919 || Patrol || Prototype || Flying boat. Never completed.
 * Nieuport 10 Triplane || France || 1915 || Fighter || Prototype || Extreme backwards stagger of top plane.
 * Nieuport 17 Triplane || France || 1916 || Fighter || Prototype || Extreme backwards stagger of top plane.
 * Nieuport 17bis Triplane || France || 1917 || Fighter || Prototype || Extreme backwards stagger of top plane.
 * Nieuport London || UK || 1920 || Bomber || Prototype || Planned night bomber
 * Oeffag Type CF || Austria-Hungary || 1918 || Fighter || Prototype ||
 * Parnall Possum || UK || 1923 || Experimental || Prototype || Research into centrally-mounted engine.
 * Pfalz Dr-Typ || Germany || 1917 || Fighter || Prototype || Based on the Pfalz D.III biplane.
 * Pfalz Dr.I || Germany || 1918 || Fighter || Prototype || Pre-series batch of 10 delivered.
 * Pfalz Dr.II || Germany || 1918 || Fighter || Prototype ||
 * Richter triplane || Germany || 1923 || Private || Prototype || Hang-glider. One of several types flown by Hans Richter having varying numbers of planes.
 * Rodjestveisky triplane || Russia || 1911 || Experimental || Prototype ||
 * Roe I Triplane || United Kingdom || 1909 || Experimental || Prototype || Has been described as a tandem triplane due to its relatively large triplane aft plane.
 * Roe II Triplane || United Kingdom || 1910 || Experimental || Prototype || 2 built.
 * Roe III Triplane || United Kingdom || 1910 || Private || Production || Small number sold.
 * Roe IV Triplane || United Kingdom || 1910 || Experimental || Prototype ||
 * Sablatnig SF.4Dr || Germany || 1917 || Fighter || Prototype || Floatplane. Redesigned triplane variant of the SF.4 biplane.
 * Schukowski KOMTA || Soviet Union || 1922 || Bomber || ||
 * Schütte-Lanz Dr.I || Germany || 1917 || Fighter || Prototype ||
 * Siemens-Schuckert Dr.I || Germany || 1917 || Fighter || Prototype ||
 * Siemens-Schuckert DDr.I || Germany || 1917 || Fighter || Prototype ||
 * Sopwith Cobham || United Kingdom || 1919 || Bomber || Prototype || 3 flown
 * Sopwith Hispano-Suiza Triplane || United Kingdom || 1916 || Fighter || Prototype || 2 flown.
 * Sopwith L.R.T.Tr. || United Kingdom || 1916 || Fighter || Prototype || Combined escort fighter and airship interceptor.
 * Sopwith Rhino || United Kingdom || 1917 || Bomber || Prototype || 2 flown
 * Sopwith Snark || United Kingdom || 1919 || Fighter || Prototype || 3 flown
 * Sopwith Triplane || United Kingdom || 1916 || Fighter || Production || First military triplane in service.
 * Stringfellow triplane || United Kingdom || 1868 || Experimental || Project || John Stringfellow showed his design at the world's first aeronautical exhibition, at the Crystal Palace, London.
 * Tarrant Tabor || United Kingdom || 1919 || Bomber || Prototype || Crashed on its maiden flight.
 * Voisin Triplane || France || 1916 || Bomber || Prototype || 3 flown
 * Witteman-Lewis XNBL-1 || USA || 1923 || Bomber || Prototype || Also known as "Barling Bomber". Same designer as Tabor.
 * W.K.F. 80.05 || Austria-Hungary || 1917 || Fighter || Prototype ||
 * }
 * Euler Dreidecker Type 4 || Germany || 1918 || Fighter || Prototype ||
 * Euler Dreidecker Type 5 || Germany || 1918 || Fighter || Prototype || Triplane variant of the Euler Vierdecker quadruplane.
 * Faccioli Triplane || Italy || 1909 || Experimental || Prototype || Crashed after a short hop.
 * Farman Voisin || France || 1908 || Experimental || Prototype || Original Voisin machine modified to a triplane.
 * Felixstowe Fury || United Kingdom || 1918 || Long-range flying boat || Prototype || Flying boat. Also known as the Porte Super-Baby
 * Fokker Dr.1 || Germany || 1917 || Fighter || Production || Braced variant of the V.4, first flown as the V.5
 * Fokker V.4 || Germany || 1917 || Fighter || Prototype || Cantilever wings.
 * Fokker V.6 || Germany || 1917 || Fighter || Prototype ||
 * Fokker V.8 || Germany || 1917 || Fighter || Prototype || Tandem design, having a triplane fore wing, biplane rear wing and monoplane tail stabiliser.
 * Friedrichshafen FF.60 || Germany || 1918 || Experimental || Prototype || Floatplane
 * Goupy No.1 || France || 1908 || Experimental || Prototype ||
 * Grade triplane || Germany || 1908 || Experimental || Prototype || Hans Grade. first German-built aeroplane to fly
 * Groos triplane || France || 1909 || Experimental || Prototype || Alfred Groos' second design was a triplane which failed to fly.
 * Hansa-Brandenburg CC Triplane || Germany || 1917 || Fighter || Prototype || Seaplane. One-off triplane variant of production biplane.
 * Hansa-Brandenburg L.16 || Germany || 1917 || Fighter || Prototype ||
 * Hansa-Brandenburg W.17 || Germany || 1917 || Fighter || Prototype || Seaplane. Cantilever bottom wing.
 * Labourdette-Halbronn H.T.1 || France || 1918 || Bomber || Prototype || 1 flown. Twin-hulled flying boat.
 * Labourdette-Halbronn H.T.2 || France || 1919 || Bomber || Prototype || 2 flown. Development of the H.T.1
 * Levy-Besson Alerte || France || 1917 || Patrol || Production || Flying boat. Centre wing longer than the others. 100 built, used for patrol and ASW bombing rather than the "Alerte" role.
 * Levy-Besson 450-hp || France || 1918 || ||  || Flying boat
 * Levy-Besson 300-hp || France || data-sort-value="1918.5"|c. 1918 || ||  || Flying boat. Under construction in 1918
 * Levy-Besson 500-hp || France || data-sort-value="1918.5"|c. 1918 || ||  || Flying boat never completed?
 * Levy-Besson High Seas || France || data-sort-value="1919.5"|c. 1919 || || Production || Flying boat. Production batch of 100 was cancelled after some had been completed. Top and centre wings of equal span, bottom wing shorter.
 * Levy Besson HB.2 || France || 1919 || ||  ||
 * LFG Roland D.IV || Germany || 1917 || Fighter || Prototype || Also known as the Dr. I.
 * Lloyd 40.15 || Austria-Hungary || 1917 || Fighter || Prototype ||
 * Lohner Typ A || Austria-Hungary || 1917 || Fighter || Prototype || Later redesignated the 111.04.
 * Mitsubishi 1MT || Japan || 1922 || Bomber || Production || Navy Type 10.
 * Morane-Saulnier TRK || France || 1915 || Bomber || Prototype || 1 built.
 * Naval Aircraft Factory Giant Boat || USA || 1919 || Patrol || Prototype || Flying boat. Never completed.
 * Nieuport 10 Triplane || France || 1915 || Fighter || Prototype || Extreme backwards stagger of top plane.
 * Nieuport 17 Triplane || France || 1916 || Fighter || Prototype || Extreme backwards stagger of top plane.
 * Nieuport 17bis Triplane || France || 1917 || Fighter || Prototype || Extreme backwards stagger of top plane.
 * Nieuport London || UK || 1920 || Bomber || Prototype || Planned night bomber
 * Oeffag Type CF || Austria-Hungary || 1918 || Fighter || Prototype ||
 * Parnall Possum || UK || 1923 || Experimental || Prototype || Research into centrally-mounted engine.
 * Pfalz Dr-Typ || Germany || 1917 || Fighter || Prototype || Based on the Pfalz D.III biplane.
 * Pfalz Dr.I || Germany || 1918 || Fighter || Prototype || Pre-series batch of 10 delivered.
 * Pfalz Dr.II || Germany || 1918 || Fighter || Prototype ||
 * Richter triplane || Germany || 1923 || Private || Prototype || Hang-glider. One of several types flown by Hans Richter having varying numbers of planes.
 * Rodjestveisky triplane || Russia || 1911 || Experimental || Prototype ||
 * Roe I Triplane || United Kingdom || 1909 || Experimental || Prototype || Has been described as a tandem triplane due to its relatively large triplane aft plane.
 * Roe II Triplane || United Kingdom || 1910 || Experimental || Prototype || 2 built.
 * Roe III Triplane || United Kingdom || 1910 || Private || Production || Small number sold.
 * Roe IV Triplane || United Kingdom || 1910 || Experimental || Prototype ||
 * Sablatnig SF.4Dr || Germany || 1917 || Fighter || Prototype || Floatplane. Redesigned triplane variant of the SF.4 biplane.
 * Schukowski KOMTA || Soviet Union || 1922 || Bomber || ||
 * Schütte-Lanz Dr.I || Germany || 1917 || Fighter || Prototype ||
 * Siemens-Schuckert Dr.I || Germany || 1917 || Fighter || Prototype ||
 * Siemens-Schuckert DDr.I || Germany || 1917 || Fighter || Prototype ||
 * Sopwith Cobham || United Kingdom || 1919 || Bomber || Prototype || 3 flown
 * Sopwith Hispano-Suiza Triplane || United Kingdom || 1916 || Fighter || Prototype || 2 flown.
 * Sopwith L.R.T.Tr. || United Kingdom || 1916 || Fighter || Prototype || Combined escort fighter and airship interceptor.
 * Sopwith Rhino || United Kingdom || 1917 || Bomber || Prototype || 2 flown
 * Sopwith Snark || United Kingdom || 1919 || Fighter || Prototype || 3 flown
 * Sopwith Triplane || United Kingdom || 1916 || Fighter || Production || First military triplane in service.
 * Stringfellow triplane || United Kingdom || 1868 || Experimental || Project || John Stringfellow showed his design at the world's first aeronautical exhibition, at the Crystal Palace, London.
 * Tarrant Tabor || United Kingdom || 1919 || Bomber || Prototype || Crashed on its maiden flight.
 * Voisin Triplane || France || 1916 || Bomber || Prototype || 3 flown
 * Witteman-Lewis XNBL-1 || USA || 1923 || Bomber || Prototype || Also known as "Barling Bomber". Same designer as Tabor.
 * W.K.F. 80.05 || Austria-Hungary || 1917 || Fighter || Prototype ||
 * }
 * Nieuport 17 Triplane || France || 1916 || Fighter || Prototype || Extreme backwards stagger of top plane.
 * Nieuport 17bis Triplane || France || 1917 || Fighter || Prototype || Extreme backwards stagger of top plane.
 * Nieuport London || UK || 1920 || Bomber || Prototype || Planned night bomber
 * Oeffag Type CF || Austria-Hungary || 1918 || Fighter || Prototype ||
 * Parnall Possum || UK || 1923 || Experimental || Prototype || Research into centrally-mounted engine.
 * Pfalz Dr-Typ || Germany || 1917 || Fighter || Prototype || Based on the Pfalz D.III biplane.
 * Pfalz Dr.I || Germany || 1918 || Fighter || Prototype || Pre-series batch of 10 delivered.
 * Pfalz Dr.II || Germany || 1918 || Fighter || Prototype ||
 * Richter triplane || Germany || 1923 || Private || Prototype || Hang-glider. One of several types flown by Hans Richter having varying numbers of planes.
 * Rodjestveisky triplane || Russia || 1911 || Experimental || Prototype ||
 * Roe I Triplane || United Kingdom || 1909 || Experimental || Prototype || Has been described as a tandem triplane due to its relatively large triplane aft plane.
 * Roe II Triplane || United Kingdom || 1910 || Experimental || Prototype || 2 built.
 * Roe III Triplane || United Kingdom || 1910 || Private || Production || Small number sold.
 * Roe IV Triplane || United Kingdom || 1910 || Experimental || Prototype ||
 * Sablatnig SF.4Dr || Germany || 1917 || Fighter || Prototype || Floatplane. Redesigned triplane variant of the SF.4 biplane.
 * Schukowski KOMTA || Soviet Union || 1922 || Bomber || ||
 * Schütte-Lanz Dr.I || Germany || 1917 || Fighter || Prototype ||
 * Siemens-Schuckert Dr.I || Germany || 1917 || Fighter || Prototype ||
 * Siemens-Schuckert DDr.I || Germany || 1917 || Fighter || Prototype ||
 * Sopwith Cobham || United Kingdom || 1919 || Bomber || Prototype || 3 flown
 * Sopwith Hispano-Suiza Triplane || United Kingdom || 1916 || Fighter || Prototype || 2 flown.
 * Sopwith L.R.T.Tr. || United Kingdom || 1916 || Fighter || Prototype || Combined escort fighter and airship interceptor.
 * Sopwith Rhino || United Kingdom || 1917 || Bomber || Prototype || 2 flown
 * Sopwith Snark || United Kingdom || 1919 || Fighter || Prototype || 3 flown
 * Sopwith Triplane || United Kingdom || 1916 || Fighter || Production || First military triplane in service.
 * Stringfellow triplane || United Kingdom || 1868 || Experimental || Project || John Stringfellow showed his design at the world's first aeronautical exhibition, at the Crystal Palace, London.
 * Tarrant Tabor || United Kingdom || 1919 || Bomber || Prototype || Crashed on its maiden flight.
 * Voisin Triplane || France || 1916 || Bomber || Prototype || 3 flown
 * Witteman-Lewis XNBL-1 || USA || 1923 || Bomber || Prototype || Also known as "Barling Bomber". Same designer as Tabor.
 * W.K.F. 80.05 || Austria-Hungary || 1917 || Fighter || Prototype ||
 * }
 * Schütte-Lanz Dr.I || Germany || 1917 || Fighter || Prototype ||
 * Siemens-Schuckert Dr.I || Germany || 1917 || Fighter || Prototype ||
 * Siemens-Schuckert DDr.I || Germany || 1917 || Fighter || Prototype ||
 * Sopwith Cobham || United Kingdom || 1919 || Bomber || Prototype || 3 flown
 * Sopwith Hispano-Suiza Triplane || United Kingdom || 1916 || Fighter || Prototype || 2 flown.
 * Sopwith L.R.T.Tr. || United Kingdom || 1916 || Fighter || Prototype || Combined escort fighter and airship interceptor.
 * Sopwith Rhino || United Kingdom || 1917 || Bomber || Prototype || 2 flown
 * Sopwith Snark || United Kingdom || 1919 || Fighter || Prototype || 3 flown
 * Sopwith Triplane || United Kingdom || 1916 || Fighter || Production || First military triplane in service.
 * Stringfellow triplane || United Kingdom || 1868 || Experimental || Project || John Stringfellow showed his design at the world's first aeronautical exhibition, at the Crystal Palace, London.
 * Tarrant Tabor || United Kingdom || 1919 || Bomber || Prototype || Crashed on its maiden flight.
 * Voisin Triplane || France || 1916 || Bomber || Prototype || 3 flown
 * Witteman-Lewis XNBL-1 || USA || 1923 || Bomber || Prototype || Also known as "Barling Bomber". Same designer as Tabor.
 * W.K.F. 80.05 || Austria-Hungary || 1917 || Fighter || Prototype ||
 * }
 * Sopwith Snark || United Kingdom || 1919 || Fighter || Prototype || 3 flown
 * Sopwith Triplane || United Kingdom || 1916 || Fighter || Production || First military triplane in service.
 * Stringfellow triplane || United Kingdom || 1868 || Experimental || Project || John Stringfellow showed his design at the world's first aeronautical exhibition, at the Crystal Palace, London.
 * Tarrant Tabor || United Kingdom || 1919 || Bomber || Prototype || Crashed on its maiden flight.
 * Voisin Triplane || France || 1916 || Bomber || Prototype || 3 flown
 * Witteman-Lewis XNBL-1 || USA || 1923 || Bomber || Prototype || Also known as "Barling Bomber". Same designer as Tabor.
 * W.K.F. 80.05 || Austria-Hungary || 1917 || Fighter || Prototype ||
 * }
 * Voisin Triplane || France || 1916 || Bomber || Prototype || 3 flown
 * Witteman-Lewis XNBL-1 || USA || 1923 || Bomber || Prototype || Also known as "Barling Bomber". Same designer as Tabor.
 * W.K.F. 80.05 || Austria-Hungary || 1917 || Fighter || Prototype ||
 * }
 * W.K.F. 80.05 || Austria-Hungary || 1917 || Fighter || Prototype ||
 * }