USS Mission Bay (CVE-59) was a Casablanca-class escort carrier of the United States Navy. Named for Mission Bay, California, she was the only U.S. Naval vessel to bear the name. Originally scheduled to be built as AVG-59, USS Mission Bay (CVE-59), it was redesignated ACV-59 on August 20, 1942; laid down by Kaiser Co., Inc., Vancouver, Washington on December 28, 1942; launched on May 26, 1943; sponsored by Mrs. James McDonald; redesignated CVE-59 on July 15, 1943; acquired by the Navy from the Maritime Commission on September 13, 1943; and commissioned at Astoria, Oregon the same day, with Captain William L. Rees in command.