Cullen Andrew Jones (born February 29, 1984) is an American competition swimmer and Olympic gold medalist who specializes in freestyle sprint events. As part of the American team, he holds the world record in the 4×100-meter freestyle relay (long course). At the 2012 Summer Olympics, he won silver medals in the 4x100-meter freestyle relay and the 50-meter freestyle.
Jones is the second African-American to hold or share a world record (4×100-meter freestyle relay) in swimming after Anthony Ervin. He is also the third African-American to make the U.S. Olympic swimming team after Anthony Ervin and Maritza Correia. At the 2008 United States Olympic Trials, Jones broke the American record in the 50-meter freestyle with a time of 21.59. The record was subsequently broken the next day by Garrett Weber-Gale. At the 2008 Olympic Games in Beijing, he won a gold medal in the 4×100-meter freestyle relay in a world record time of 3:08.24 with Michael Phelps, Jason Lezak and Garrett Weber-Gale.
In July 2009, Jones set the American record in the 50-meter freestyle at the U.S. National Championships in Indianapolis, Indiana.
At the 2012 United States Olympic Trials in Omaha, Nebraska, the qualifying meet for the 2012 Olympics, Jones made the Olympic team for the second time by finishing first in the 50-meter freestyle and second in the 100-meter freestyle, which subsequently qualified him for the 4×100-meter freestyle relay. In the 50-meter freestyle final, Jones won with a time of 21.59, one one-hundredth (0.01) of a second ahead of second-place finisher Anthony Ervin (21.60).