Nathan Ghar-jun Adrian (born December 7, 1988) is an American competitive swimmer and five-time Olympic gold medalist who currently holds the American record in the long course 50-meter freestyle event.
In his Olympic debut at the 2008 Summer Olympics, Adrian swam in the heats of the 4×100-meter freestyle relay and earned a gold medal when the United States team won in the final. At the 2012 Summer Olympics, Adrian won gold medals in both the 100-meter freestyle and the 4×100-meter medley relay, and a silver medal in the 4×100-meter freestyle relay. He has won a total of twenty-four medals in major international competitions; fifteen gold, six silver, and three bronze spanning the Olympics, the World, and the Pan Pacific Championships. In the 2016 Summer Olympics, along with Michael Phelps, Caeleb Dressel, and Ryan Held, he won a gold medal in the 4x100-meter freestyle relay as well as individual bronze medals in the 50-meter and 100-meter freestyles.