Keshava and Keshav (केशव) are alternate names for the Hindu Lord Krishna. Keshava is the Sanskrit form of the name, Keshav the Hindi pronunciation. Keshava appears as the 23rd and 648th names in the Vishnu sahasranama. Kesava (Sanskrit) is the first of the 24 epithets of Lord Krishna.

According to Adi Sankara' s commentary on the Vishnu sahasranama, Keshava has three meanings:

• one whose Kesa or locks are beautiful
• one who is Himself the three: kah Brahma; ah Vishnu and Isa Shiva
• one who destroyed the asura or demon Kesi in the Krishna avatar

It also means

• one who is endowed with the rays of light spreading within the orbit of the sun
• one who is endowed with divine powers of Brahma, Vishnu and Siva

Reference

• Dictionary of Hindu Lore and Legend (ISBN 0500510881) by Anna Dhallapiccola