Onesmus Kimani Ngunjiri was born at Banita Sisal Estate in 1953. He is the 5th born in a family of 10. He is a Kenyan member of Parliament (MP) representing Bahati constituency in Nakuru county. He is a member of The National Alliance (TNA) and a coalition member of Jubilee Alliance. He went to Michinda Primary School where he completed in 1965. He then proceeded to Michinda Secondary School where he sat for EACE in 1971.

Kimani Ngunjiri has never been employed and has been a business man since he completed secondary school. He has worked as a manager in his father’s farm, also ventured in the charcoal business, matatu business, selling scrap metal, tours and travel and farming. He has also been involved in tractor and lorry businesses.

He is a member of the Departmental Committee on Lands and the Committee on Implementation.