San Pedro Bay is an inlet on the Pacific Ocean coast of southern California, United States. It is the site of the Port of Los Angeles and the Port of Long Beach, which together form the fifth-busiest port facility in the world and the busiest in the Americas. The Los Angeles community of San Pedro borders a small portion of the western side of the bay. The city of Long Beach borders the port on the eastern side of the bay. The northern part of the bay, which is the largest part of the port, is bordered by the Los Angeles neighborhood of Wilmington.