Del Norte County is a county at the far northwest corner of the U.S. state of California, along the Pacific Ocean adjacent to the Oregon border. As of the 2010 census, the population was 28,610. The county seat and only incorporated city are Crescent City. Del Norte was pioneered and settled by Azorean Portuguese explorers and dairy farmers, which may account for the local pronunciation of the county name.

The rural county is notable for forests containing giant Coast Redwoods, with some attaining heights over 350 feet (110 m). This northernmost county on the California coast also has scores of unique plants and flowers, dozens of species of coastal birds and fish, rocky primitive beaches and sea stacks, pristine rivers, and historic lighthouses. Del Norte is also known among Bigfoot enthusiasts as the location of the famous Patterson–Gimlin film, as well as being the location of some of the forest scenes used in Return of the Jedi.