Justin Va'a (born on 26 July 1978 Wainuiomata, New Zealand) is a former prop for the Samoan national rugby team and the Scottish club Glasgow Warriors in the Celtic League. He has earned 9 caps for Samoa. He was a member of the Pacific Islanders rugby union team for the 2006 tour of Europe. In 2012 he played his 100th game for Wainuiomata.