USS S-30 (SS-135) was an S-class submarine of the United States Navy during World War II. S-30 was laid down on 1 April 1918 by the Union Iron Works at San Francisco, California. She was launched on 21 November 1918 sponsored by Mrs. Edward S. Stalnaker, and commissioned on 29 October 1920 with Lieutenant Commander Stuart E. Bray in command.