Krishna Eighth incarnation of the god Vishnu in Hinduism

Krishna (Sanskrit: कृष्ण, Kṛṣṇa in IAST,  is the eighth incarnation of the god Vishnu in Hinduism. The name Krishna appears as the 57th and 550th name of Lord Vishnu in Vishnu Sahasranama of the Mahabharata, and is also listed in the 24 Keshava Namas of Lord Vishnu which are recited and praised at the beginning of all Vedic pujas.

http://en.wikipedia.org/wiki/Krishna