Jeannine Altmeyer (2 May 1948, Pasadena, California) is an American soprano who had a prolific international opera career during the 1970s through the 1990s. Particularly admired for her portrayal of Wagner and Strauss heroines, she notably sang Brünnhilde under Marek Janowski on the 1982 recording of The Ring Cycle which won a Grammy Award for Best Opera Recording.