California Citrus State Historic Park is an open-air museum in the city of Riverside, California, United States. As part of the state park system of California, it interprets the historic cultural landscape of the citrus industry. The park’s museum exhibits and interpretive features share the story of the citrus industry’s role in the history and development of Southern California, and is told through the experiences of the diverse migrant and immigrant groups who made it all possible. The 248-acre (100 ha) park was established in 1993.

This California State Historic Park reveals the cultural, political, and environmental aspects of the time when “Citrus was King” in California, especially the Navel orange from Riverside, and recognizing the importance of the citrus industry in Southern California.