Fastlane or fast lane may refer to:
- Fast Lane, an electronic toll collection system used in Massachusetts
- Fastlane (TV series), a Fox television series from 2002 to 2003
- The Fast Lane (TV series), an ABC Australia television series from 1985 to 1987
- Fast Lane (arcade game), a 1987 Konami arcade game
- Fastlane (band), a British rock band
- "Fast Lane" (song), a song by Bad Meets Evil
- "Fast Lane", a song by E-40
- "Fastlane" (Lindsay Lohan song)
- NCR FastLane, a self checkout system by NCR
- FastLane Technologies, a software company in Ottawa, Ontario
- Passing lane or fast lane, the lane on a multi-lane highway or motorway closest to the center of the road
- Fastlane, a blog by Bob Lutz of GM
- Fast Lane (Cedar Fair Entertainment Company), fast pass system at Cedar Fair amusement parks