XF3

XF3 may refer to:

Aviation

 * Bell D-188A (also designated XF3L), proposed supersonic tiltjet fighter
 * Berliner-Joyce XF3J, biplane fighter
 * Grumman F3F (experimental designation XF3F-1), biplane fighter
 * Ishikawajima-Harima F3 (development designation XF3), turbofan jet engine
 * Vought XF3U, prototype biplane fighter
 * Wright XF3W Apache, racing aircraft

Other uses

 * (49379) 1998 XF3, minor planet
 * The X Factor (British series 3), British TV series
 * Radio callsign for the Caribbean islands in Mexico - see Call signs in Mexico