The Port of Long Beach, administered as the Harbor Department of the City of Long Beach, is a container port in the United States, which adjoins Port of Los Angeles. Acting as a major gateway for US–Asian trade, the port occupies 3,200 acres (13 km2) of land with 25 miles (40 km) of waterfront in the city of Long Beach, California. The Port of Long Beach is located less than two miles (3 km) southwest of Downtown Long Beach and approximately 25 miles (40 km) south of Downtown Los Angeles. The seaport generates approximately US$100 billion per year in trade and employs more than 316,000 people in Southern California. In 2022, the port, together with the adjoining Port of Los Angeles, were considered amongst the world's least efficient ports by the World Bank and IHS Markit citing union protectionism and a lack of automation.

The Port of Los Angeles is a seaport managed by the Los Angeles Harbor Department, a unit of the City of Los Angeles. It occupies 7,500 acres (3,000 ha) of land and water with 43 miles (69 km) of waterfront and adjoins the separate Port of Long Beach. Promoted as "America's Port", the port is located in San Pedro Bay in the San Pedro and Wilmington neighborhoods of Los Angeles, approximately 20 miles (32 km) south of downtown.