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 attended North Carolina State University, where he studied English and swam for the NC State Wolfpack swimming and diving team in the National Collegiate Athletic Association (NCAA) competition from 2003 to 2006. He turned professional in the summer of 2006, after signing with Nike and burst onto the scene shortly after at the 2006 Pan Pacific Swimming Championships where he set a meet record in the 50-meter freestyle with a time of 21.84 seconds. He also swam a leg (split of 47.96) in the world record breaking 4×100-meter freestyle relay along with Michael Phelps, Neil Walker and Jason Lezak. In 2007, he also won a gold medal in 4×100-meter freestyle relay with the same teammates in the 2007 World Aquatics Championships.

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