Kamonyi is a district (akarere) in Southern Province, Rwanda.

Its capital is Kamonyi, also sometimes known as Gihinga.

Kamonyi district is divided into 12 sectors (imirenge): Gacurabwenge, Karama, Kayenzi, Kayumbu, Mugina, Musambira, Ngamba, Nyamiyaga, Nyarubaka, Rugalika, Rukoma and Runda.