The 1906 Wisconsin gubernatorial election was held on November 6, 1906. Primary elections were held on September 4, 1906.
Incumbent Republican Governor James O. Davidson won re-election, defeating Democratic nominee John A. Aylward and Socialist nominee Winfield R. Gaylord, with 57.39% of the vote.
Wisconsin voters passed a constitutional amendment in the 1904 general election to implement primary elections for nominations. The first direct primary took place on September 4, 1906.