The 1978 Wyoming gubernatorial election took place on November 7, 1978. Incumbent Democratic Governor
Edgar Herschler ran for re-election to a second term. After winning a contested Democratic primary, he advanced to the general election, where he faced former State Senator John Ostlund, the Republican nominee. Despite the strong Republican performance
nationwide, Herschler's personal popularity allowed him to narrowly win re-election to Ostlund, making him the first Democratic Governor to win re-election since
Lester C. Hunt in
1946.