William Mbevi Mutanga (born 12 July 1993) is a Kenyan athlete.

[1] He won the bronze medal at the Athletics at the 2010 Summer Youth Olympics – Boys' 400 metre hurdles.

[2] He finished fifth in the final of the 400m hurdles at the 2022 Commonwealth Games.

[3] At the same Games he then won a bronze medal as part of the Kenyan 4x400m relay team.

[4]