Dan O'Brien is a former American decathlete known for his exceptional athletic skills. Born on July 18, 1966, he gained fame in the 1990s, particularly for winning the gold medal at the 1996 Summer Olympics in Atlanta. O'Brien set multiple world records during his career, showcasing his versatility across various track and field events. In addition to his Olympic success, O'Brien was a three-time World Champion in the decathlon. He also earned numerous accolades, including being named the U.S. Olympic Committee Sportsman of the Year in 1995. His achievements have made him a prominent figure in the world of athletics.