R17

R17 or R-17 may refer to:

Vessels

 * HMAS Sydney (R17), an aircraft carrier of the Royal Australian Navy
 * HMCS Algonquin (R17), also HMS Valentine (R17), a destroyer of the Royal Canadian Navy and Royal Navy
 * USS R-17 (SS-94), a submarine of the United States Navy

Other uses

 * R17 (New York City Subway car)
 * R17 (Rodalies de Catalunya), a regional rail service in Catalonia, Spain
 * R-17 (TV series), a 2001 Japanese TV series
 * BMW R17, a motorcycle
 * ISO Recommendation R17, concerning preferred numbers
 * Oppo R17, a smartphone
 * R17: Spontaneously flammable in air, a risk phrase
 * R-17 Elbrus, a Soviet ballistic missile
 * R-17 regional road (Montenegro)
 * Renard R.17, a Belgian civil utility aircraft
 * Renault 17, a French car
 * Rubik R-17 Móka, a Hungarian glider