Kitui South Constituency
Kitui South Constituency is an electoral constituency in Kenya. It is one of eight constituencies in Kitui County. The constituency was established for the 1963 elections. At the 1988 and 1992 elections it was known as Mutomo Constituency. The constituency has six wards, all electing Members of County Assembly for the Kitui County Government.
Members of Parliament
| Elections | MP | Party | Notes |
| 1963 | Philip Nzuki Mbai | KANU | one-party system |
| 1969 | Philip Nzuki Mbai | KANU | One-party system |
| 1974 | Patrice Mwangu Ivuti | KANU | One-party system |
| 1979 | Patrice Mwangu Ivuti | KANU | One-party system |
| 1983 | E. Mwangu Ivuti | KANU | One-party system. |
| 1988 | Philip Nzuki Mbai | KANU | One-party system. |
| 1992 | Isaac Mulatya Muoki | KANU | |
| 1997 | Samuel Kalii Kiminza | SDP | |
| 2002 | Patrice Mwangu Ivuti | Ford-Asili | |
| 2007 | Isaac Mulatya Muoki | ODM-Kenya | |
| 2013 | Racheal Nyamai | NARC | Multiparty system - under new constitution. |
| 2017 | Racheal Nyamai | Jubilee | Multiparty system - under new constitution. |