Robert Edward Townsend, Jr. (born September 13, 1943) is an American former competition swimmer, Pan American Games gold medalist, and former world record-holder. Townsend won a gold medal as a member of the winning U.S. team in the men's 4×200-meter freestyle relay at the 1963 Pan American Games. He participated in the 1964 Summer Olympics in Tokyo, where he swam for the gold medal-winning U.S. team in the preliminary heats of the men's 4×200-meter freestyle relay. Under the 1964 Olympic swimming rules, he was ineligible for a medal, however, because he did not swim in the relay final.