The 1999 Katsina State gubernatorial election occurred on 9 January 1999. People's Democratic Party (PDP) candidate Umaru Musa Yar'Adua won the election, defeating Junaidu Mamuda Yantumaki, the All People's Party (APP) candidate.
APP and Alliance for Democracy (AD) candidates contested in the election. The total number of registered voters in the state was 2,236,067.