John Litei Nkamasiai (born 2 June 1983) is a Kenyan middle distance runner.
He was the bronze medalist in the Men's 800 metres at the 2006 Commonwealth Games.
Being a sprinter himself, he has excelled in coaching track athletes.
Among athletes he trained are the world junior record holder in 1500m Ronald Kwemoi and Samwel Chebolei Masai.
This Kenyan biographical article relating to athletics is a stub.