Edward Latimer Beach Sr. (June 30, 1867 - December 20, 1943) was a United States Navy officer and author. He served in three of the United States' wars, ranging from the Spanish-American War up through World War I. He was the father of the future Captain Edward L. Beach Jr. who commanded the nuclear-powered submarine USS Triton during her 1960 submerged circumnavigation and wrote the 1955 best-selling novel Run Silent, Run Deep.