Trigon may refer to:
- Trigon (band), a German fusion band
- Trigon (comics), a comic book character
- Trigon (game), a ball game
- Trigon (jazz), a Moldovan folk jazz band
- Trigone of urinary bladder, a region of the internal urinary bladder
- Trigon puzzle, a type of logic puzzle
- Triangle
- A type of neume, an element of musical notation
- Trigon, a 1990 Japanese arcade game released in the US as Lightning Fighters