Roy A. Sommer (born April 5, 1957) is an American former professional ice hockey player who is currently serving as the head coach of the San Diego Gulls of the American Hockey League (AHL). Sommer played three games for the Edmonton Oilers of the National Hockey League during the 1980–81 season, before spending the rest of his playing career, which lasted from 1977 to 1987, in the minor leagues. He was the head coach of the American Hockey League's San Jose Barracuda from 1998 to 2019 and 2020 to 2022. The Barracuda, the AHL affiliate of the San Jose Sharks, have also been known as the Kentucky Thoroughblades, Cleveland Barons, Worcester Sharks throughout his tenure. He was the longest tenured head coach with the same organization in the AHL and has the most AHL wins as head coach.