Peter Mungai Warui (born 22 April 1981) is a Kenyan boxer.
He competed in the men's light flyweight event at the 2016 Summer Olympics where he was eliminated in the quarterfinals.
[3] Warui finished in fourth place in the African qualifiers for the 2016 Summer Olympics.
[4] In the round of 16, Warui defeated China's Lü Bin on a split decision.
[5] In the quarter-finals, Warui was defeated by Cuban boxer Joahnys Argilagos.