Othaya Constituency is an electoral constituency in Kenya. It is one of six constituencies in Nyeri County. Othaya Constituency comprises Othaya division of Nyeri County. and was established for the 1966 elections. it has a population of 91,081 people (2019 census).
Othaya is the main town located in this constituency. Mwai Kibaki, the former president of Kenya, has been the Othaya MP since 1974, who had earlier been the MP of Doonholm Constituency (now Makadara).