Dan O'Brien is a former American decathlete, known for his exceptional athletic skills in a variety of track and field events. Born on July 18, 1966, in Klamath Falls, Oregon, he gained fame for winning the gold medal at the 1996 Summer Olympics in Atlanta. O'Brien set multiple world records during his career, showcasing his versatility and strength across ten different disciplines. In addition to his Olympic success, O'Brien was a two-time world champion, winning titles in 1991 and 1993. He also earned numerous accolades, including being named the U.S. Olympic Committee Sportsman of the Year in 1991. His dedication to the sport has made him a prominent figure in athletics.