Douglas Albert Russell (born February 20, 1946) is an American former competitive swimmer, Olympic champion, and former world record-holder in three different events.

[4][5] Doug Russell Park, part of the southern edge of the UT Arlington campus, is named in his honor.

[5] At the 1968 Summer Olympics, Russell won the first-ever gold medal awarded in the men's 100-meter butterfly—an event which made its debut at the 1968 Olympics–in an upset over teammate and favorite Mark Spitz.

He won another gold medal swimming the butterfly leg for the winning U.S. team in the 4×100-meter medley relay.

Russell, together with relay teammates Charlie Hickcox (backstroke), Don McKenzie (breaststroke), and Ken Walsh (freestyle), set a new world record of 3:54.9 in the event final.