The present study has been undertaken to document the Ichthyofauna of Hazaribag district of Jharkhand representing 6 orders, 16 families, 34 genera and 54 species. Fish belonging to order Cypriniformes were dominant with 28 species serially followed by order Perciformes with 11 species, Siluriformes with 10 species, Mastacembliformes with 3 species, Osteoglossiformes and Beloniformes with 1 species in both the orders. The present study on the Ichthyofauna will be useful to protect and conserve the biodiversity of fresh water fishes.