Route 666
- A666 road
- Alberta Highway 666
- CMFT
- County Route 666 (Atlantic County, New Jersey)
- Florida State Road 666
- My Mind's Eye (album)
- Natural Born Killers (soundtrack)
- Ohio State Route 666
- Ontario Highway 666
- Pennsylvania Route 666
- R666 road (Ireland)
- Real (L'Arc-en-Ciel album)
- Route 666 (Helltrain album)
- Route 666 (Married... with Children)
- Route 666 (Supernatural)
- Route 666 (The Hamsters album)
- Route 666 (The Iron Maidens album)
- Route 666 (comics)
- Route 666 (film)
- The End of the Beginning (God Is an Astronaut album)
- The Machinist
- U.S. Route 491