7.62mm can refer to:
- 7.62×51mm NATO, American service round, used since the 50's.
- 7.62×54mmR, Russian round, used in the Dragunov.
- 7.62×39mm, Russian round, used in the Kalashnikov rifle and its variants except the AK-74.
- 7.62×25mm Tokarev, WWII era round, used in the PPSh-41.