William Odongo Omamo (27 March 1928 in Bondo, Kenya Colony – 27 April 2010) was a Kenyan politician.

One of the most prominent is Raychelle Omamo, a former Law Society of Kenya chairperson and former ambassador to France who was selected as Cabinet Secretary of Defence in April 2013.

Omamo was born on 27 March 1928, in Bondo (then ruled as part of the British Kenya Colony) in a family of eight children, two boys and six girls.

He once described his first day in school as follows: "I was half naked, with only a goat skin strip to cover the private parts and buttocks.

Omamo's political career spanned almost four decades and saw him represent the Bondo and Muhoroni constituencies in Kenya.