Unni is used as a first name in Kerala, India. In the Malayalam language, it is also used as an adjective meaning an infant boy. Thus, Unnikrishnan means Lord Krishna in the infant form and Unniyesu means (Jesus in Malayalam) in the infant form. The word is also the name of a caste among Hindus in the Southern India State of Kerala.
The name Unni is also used as a surname by various sub-groups of Pushpaka Brahmins like Pushpakan Unnis and Thiyattunnis. There is a common belief that Unnis are sub-divided into Pushpakanunnis, Thiyattunnis and Pattarunnis. In fact these are entirely different communities in a common class of Kerala Brahmins and there were no inter caste marriages among these communities anciently. Thiyattunnis were traditionally the performers of an ancient art form called Tīyāttu. The famous Malayalam writer Kottarathil Sankunni was a Tīyāttunni whereas famous essayist D. Padmanabhanunni was a Pushpakanunni. Thiyattunnis have the right for Tantric Poojas and other privileges enjoyed by the Nambudiri caste.
Notable people the name/surname Unni include: