Carmel Bay State Marine Conservation Area (SMCA) is a marine protected area in Carmel Bay. Carmel Bay is adjacent to the city of Carmel-by-the-Sea and is near Monterey, on California’s central coast. The marine protected area covers 2.12 square miles. Recreational fishing of finfish and limited commercial taking of kelp is permitted within the SMCA.

Carmel Bay is a bay of the Pacific Ocean, along the central coast of California in Monterey County. The bay is 4 mi (6.4 km) long and 2 mi (3.2 km) wide with its mouth about 3 mi (4.8 km) across, between Point Carmel to the south and Point Cypress to the north; Monterey Bay is about four coastline miles north, with Point Pinos intervening.