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

This disambiguation page lists articles associated with the title XF4.
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