A corroded pipeline near Refugio State Beach, California, spilled 142,800 gallons (3,400 barrels) of crude oil onto the Gaviota Coast.

Refugio State Beach is a protected state beach park in California, United States, approximately 20 miles (32 km) west of Santa Barbara. One of three state parks along the Gaviota Coast, it is 2.5 miles (4.0 km) west of El Capitán State Beach.

The Refugio oil spill occurred on May 19, 2015, on the Gaviota Coast in Santa Barbara County, California, United States. It contaminated one of the most biologically diverse areas of the West Coast of the United States with 142,800 U.S. gallons of crude oil. The corroded pipeline that caused the spill closed indefinitely, resulting in financial impacts to the county estimated as high as $74 million as it and a related pipeline remained out of service for three years. The cost of the cleanup was estimated by the company to be $96 million with overall expenses including expected legal claims and potential settlements to be around $257 million.

The Gaviota Coast in Santa Barbara County, California is a rural coastline along the Santa Barbara Channel roughly bounded by Goleta Point on the south and the north boundary of the county on the north. This last undeveloped stretch of Southern California coastline consists of dramatic bluffs, isolated beaches and terraced grasslands.