Richard Hetherington O'Kane was a United States Navy submarine commander in World War II, who was awarded the Medal of Honor for commanding USS Tang in the Pacific War against Japan to the most successful record of any United States submarine ever. He also received three Navy Crosses and three Silver Stars, for a total of seven awards of the United States military's three highest decorations for valor in combat. Before commanding Tang, O'Kane served in the highly successful USS Wahoo as executive officer and approach officer under noted Commander Dudley "Mush" Morton. In his ten combat patrols, five in Wahoo and five commanding Tang, O'Kane participated in more successful attacks on Japanese shipping than any other submarine officer during the war.

USS Tang (SS-306) was a Balao-class submarine of World War II, the first ship of the United States Navy to bear the name Tang. She was built and launched in 1943, serving until being sunk by her own torpedo off China in the Taiwan Strait on 24 October 1944.