The rufous-vented grass babbler or rufous-vented prinia is a small warbler in the family Pellorneidae that occurs in Pakistan, northwestern India and Nepal.

The jungle babblers are a family, Pellorneidae, of mostly Old World passerine birds belonging to the superfamily Sylvioidea. They are quite diverse in size and coloration, and usually characterised by soft, fluffy plumage and a tail on average the length of their body, or longer. These birds are found in tropical zones, with the greatest biodiversity in Southeast Asia and the Indian subcontinent.