The most decorated athlete in Olympic history known for swimming is Michael Phelps. Over his career, Phelps has amassed a record-breaking total of 28 Olympic medals, including 23 golds, over four Olympic games from 2004 to 2016. His achievements span multiple events, primarily in freestyle and butterfly strokes, showcasing his versatility as a swimmer. Phelps has not only redefined swimming excellence but also brought significant global attention to competitive swimming. His dedication and success have made him an iconic figure in the sports world and a role model for aspiring athletes.