XF4
# XF4

XF4 may refer to:

## Aircraft

* Douglas F4D Skyray (prototype designation XF4D-1), jet fighter-interceptor
* Grumman F4F Wildcat (experimental designations XF4F-1 to XF4F-3), monoplane fighter
* McDonnell Douglas F-4 Phantom II (experimental designation XF4H-1), jet fighter-bomber
* Vought F4U Corsair (experimental designation XF4U-1), monoplane fighter

## Other uses

* The X Factor (British series 4), British TV series
* Radio callsign for the Revillagigedo islands in Mexico - see Call signs in Mexico
