Prashanth Sellathurai (born 1 October 1986) is an Australian gymnast.

He was educated at Trinity Grammar School (New South Wales) in Sydney's inner west.

Sellathurai was part of the Australian men's squad which won its first team gold medal in the Commonwealth Games at the 2010 event in New Delhi, which was sealed by his performance on the rings.

He is a three-time medallist on the pommel horse at the World Championships (two bronzes and one silver).

This biographical article related to Australian artistic gymnastics is a stub.