The term F-5 could refer to:

• The photo-reconnaissance version of the P-38 Lightning fighter
• The export version of the Shenyang J-5 Chinese jet fighter
• The Northrop F-5 Freedom Fighter 1960s US jet fighter produced for export
• The "finishing move" used by ex-WWE wrestler Brock Lesnar.
• The Fujita scale level of the most powerful tornadoes recorded.