Kirinyaga County has four constituencies; Mwea, Gichugu, Ndia, and Kirinyaga Central. Governor Anne Waiguru heads the county.
Below is a list of MPs in Kirinyaga County.
List Of MPs In Kirinyaga County
| Constituency | MP | Party |
| Mwea | Mary Maingi | UDA |
| Gichugu | Robert Gichimu Githinji | UDA |
| Ndia | George Macharia Kariuki | UDA |
| Kirinyaga Central | Joseph Gachoki Gitari | UDA |