Bolsa Chica Ecological Reserve, Protected wetland area in Huntington Beach, United States.

Bolsa Chica Ecological Reserve is a coastal wetland in Huntington Beach, Orange County, California, managed by the California Department of Fish and Wildlife. It lies between Pacific Coast Highway and the developed coast, with salt marsh, freshwater wetland, tidal flats and dunes. In 2006 a $147 million restoration reopened an inlet to the Pacific, cut off since the Bolsa Chica Gun Club dammed the wetlands in 1899.

Indigenous peoples including the Acjachemen and Tongva inhabited this land thousands of years before European settlement, leaving behind evidence of their presence. In the 19th century, the area became a private hunting club before being transformed into a protected nature reserve.

The name comes from Spanish for "little bag", after Rancho La Bolsa Chica, the 1841 land grant split from Rancho Las Bolsas. From 1899 the Bolsa Chica Gun Club, founded by Los Angeles and Pasadena businessmen, hosted duck hunting for politicians and celebrities including Babe Ruth and Lou Gehrig, and its damming cut the wetland off from the tide.

Two parking areas provide access to the reserve, with one near Warner Avenue and the other along Pacific Coast Highway for convenient entry. A network of trails connects different sections, allowing visitors to move between the various habitats and observation points.

The 1997 state purchase of 880 acres and the 2006 restoration, costing $147 million, reopened an inlet to the Pacific, reconnecting the wetland to the ocean for the first time since the Gun Club dammed it in 1899. Visitors can still see the circular frames of WWII gun turrets in the lowlands.