Hirayama (written: ) is a Japanese surname. Notable people with the surname include:
- , Japanese actress
- , Japanese film director
- , Japanese painter
- , who discovered the Hirayama families of asteroids
- , Japanese sport wrestler
- , Japanese politician
- Lalla Hirayama (born 1988), South African television host, actress, dancer and model
- Nathan Hirayama (born 1988), Canadian rugby player
- , Japanese American baseball player
- , first Japanese astronomer to discover an asteroid
- , an international football (soccer) player
- , Japanese football player
- , Japanese badminton player
- , Japanese rock climber
See also
- 1999 Hirayama, an asteroid
- Hirayama (crater), lunar crater
- Hirayama family, a family of asteroids
- Hirayama Station, a train station in Chiba Prefecture
- Hirayama syndrome, a lower motor neuron disease