The Ventura County Historic Landmarks & Points of Interest consist of buildings, sites, and neighborhoods designated by Ventura County Cultural Heritage Board as historic landmarks and points of interest in Ventura County, California. The county board of supervisors created the Cultural Heritage Board in 1966 and in August 1968, two sites were designated: the Faulkner House near Santa Paula; and the Edwards Adobe in Saticoy. The scope was established to include the entire county: both cities and the unincorporated areas. The cities of Fillmore, Oxnard, Port Hueneme, Simi Valley, and Thousand Oaks have the county Cultural Heritage Board advise them and those designations are listed here. The cities of Moorpark, Ojai, Santa Paula, and Ventura established their own separate historic designation systems with the City of Ventura Historic Landmarks and Districts developing into an extensive list. The Port Hueneme Historical Society Museum houses historical artifacts, photographs and information on the history of the Hueneme area. The museum is in the Hueneme Bank Building.

Thousand Oaks is the second-largest city in Ventura County, California, located in the northwestern part of Greater Los Angeles. Approximately 15 miles (24 km) from the city of Los Angeles and 40 miles (64 km) from Downtown Los Angeles, it is named after the many oak trees present in the area.