Flui - Fram
- Fluid drive
- Fluid flywheel
- Fluid friction
- Fluid gun
- Flushing oil
- Fluted shaft
- Flywheel
- Flywheel magneto
- Foettinger coupling
- Fog
- Fog lamp
- Folding seat
- Follower
- Foot brake
- Foot rest
- Foot starting
- Foot throttle
- Footprint
- Footway
- Force
- Force control
- Forced induction engine
- Forced water cooling
- Forced-feed lubrication
- Forging
- Fork lift truck
- Fork selector
- Forward axle
- Forward control
- Fossil fuel
- Foundation brake
- Four-axle vehicle
- Four-by-two wheel drive
- Four-cylinder engine
- Four-cylinder opposed engine
- Four-spring suspension
- Four-stroke cylce
- Four-stroke eninge (four-cycle eninge)
