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 4 x 100-meter freestyle relay and the 50-meter freestyle, as well as the gold in the 4 x 100-metre medley.
Born in the Bronx borough of New York City, Jones moved to Irvington, New Jersey, while in elementary school. He learned to swim after he was rescued from a near-drowning at a splash-down pool at Dorney Park & Wildwater Kingdom in Pennsylvania when he was five years old. He became an age-group swimmer at Metro Express, a club team at the Jewish Community Center in West Orange, New Jersey under head coach Ed Nessel. Jones later switched teams to the Jersey Gators Swim Club in Cranford. Jones graduated from Saint Benedict's Preparatory School in Newark in 2002. While there, he swam for coach Glenn Cassidy and set numerous Essex County swimming records.
Jones is the first African-American to hold a world record (4×100-meter freestyle relay) in swimming. 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, China, 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).