Mbeere South is an electoral constituency in Embu County, Kenya. It used to be known Gachoka Constituency, one of two constituencies of the former Mbeere District. It has seven wards, all of which elected councillors for the Mbeere County Council. The constituency was established for the 1988 elections.
The constituency's Member of Parliament is Mutava Musyimi, who has been serving since the 2007 General Election. Mr Musyimi quit his long term position as Secretary General to the National Council of Churches of Kenya to join politics and run against Joseph Nyagah.