Archbishop John Njenga was Roman Catholic archbishop of Mombasa from 1990 to 2005.

Njenga was born to Peter Kimani and Maria Wanjir in Tigoni, Kiambu

Kiambu

Kiambu is a town in Central Province, Kenya. It is located at around , in the elevation of about 1,720 m. It has an urban population of 13,814. It is the capital of the Kiambu District, which bounds the northern border of Nairobi...

, and attended Mang’u High School. He was ordained priest at Kibosho Major Seminary in Tanzania in 1957, and was posted to the Nairobi

Nairobi

Nairobi is the capital and largest city of Kenya. The city and its surrounding area also forms the Nairobi County. The name "Nairobi" comes from the Maasai phrase Enkare Nyirobi, which translates to "the place of cool waters". However, it is popularly known as the "Green City in the Sun" and is...

 Diocese

Diocese

A diocese is the district or see under the supervision of a bishop. It is divided into parishes.An archdiocese is more significant than a diocese. An archdiocese is presided over by an archbishop whose see may have or had importance due to size or historical significance...

. In 1970 he was ordained Bishop

Bishop

A bishop is an ordained or consecrated member of the Christian clergy who is generally entrusted with a position of authority and oversight. Within the Catholic Church, Eastern Orthodox, Oriental Orthodox Churches, in the Assyrian Church of the East, in the Independent Catholic Churches, and in the...

 of Eldoret

Eldoret

Eldoret is a town in western Kenya and the administrative centre of Uasin Gishu District of Rift Valley Province. Lying south of the Cherangani Hills, the local elevation varies from about 2100 metres above sea level at the airport to more than 2700 metres in nearby areas...

, and in 1988 Bishop of Mombasa, becoming Archbishop two years later.

Njenga was President of the Kenya Episcopal Conference, a permanent organisation of Roman Catholic bishops in Kenya, from 1976 until 1982.