Kongô (金剛) can refer to:
- Vajra, often translated as diamond or thunderbolt, an indestructible object with strong symbolism in Buddhism and often wielded by various Buddhist deities or beings.
- Mt. Kongô
- Kongô, an Imperial Japanese Navy vessel named after the mountain
- Kongô rikishi (also known as Niô), pairs of guardian statues at Buddhist temples
- Kongô school, one of the official schools of Noh theatre
- Kongô-zue, a style of walking stick or staff associated with the yamabushi