The 1999 Osun State gubernatorial election occurred in Nigeria on January 9, 1999. The AD nominee Adebisi Akande won the election, defeating the APP candidate.
Adebisi Akande emerged AD candidate.
The Governor of Osun State is elected using the plurality voting system.
The AD primary election was won by Adebisi Akande.
The total number of registered voters in the state was 1,496,058. Total number of votes cast was 547,077, while number of valid votes was 536,252. Rejected votes were 10,825.