The Woodland Opera House State Historic Park is a state park, historic site, and an opera house in Woodland, California. It features the Woodland Opera House, best known as one of the only four fully functioning 19th century opera houses in the state of California.

Unlike other state parks, the Woodland Opera House State Historic Park covers basically just the historic structure. It was built around the late 1800s, probably around mid-1880s, and served as the first opera house to serve the Sacramento Valley.

The Woodland Opera House State Historic Park opened as a state historic park in 1976 after restoration projects and efforts done by the community. Today, it stages five Mainstage Productions from September to June and summer programs for different age groups.