Mwangi was born David Dominic Mwangi in
Nanyuki,
Colony and Protectorate of Kenya, and was educated at Nanyuki Secondary School,
Kenyatta College, and briefly at the
University of Leeds. He then worked for the French Broadcasting Corporation doing odd jobs and the
British Council in
Nairobi as Visual Aids Officer, before turning to writing full-time. He was
Fellow in Writing at the
University of Iowa (1975–76). After a long tenure on Kenya's and Africa's publishing scene, Mwangi moved to the United States, having gained international recognition and won several awards. His best-known early work includes the novels
Kill Me Quick (1973),
Going Down River Road (1976), and
The Cockroach Dance (1979), which illustrate the urban landscapes of Kenya, the struggle against poverty, and the
AIDS epidemic. Mwangi died in
Malindi, Kenya, on 11 December 2025, at the age of 76. ==Prizes and awards==