Mark Webster Chatfield (August 11, 1953 – December 23, 1998) was an American breaststrokeswimmer and breaststroke specialist.
Chatfield won the gold medal in the 100-meter breaststroke at the 1971 Pan American Games. He represented the United States as a 19-year-old at the 1972 Summer Olympics in Munich, Germany. He advanced to the event final of the men's 100-meter breaststroke, finishing fourth with a time of 1:06.1.
He was the 1973 U.S. national champion in the 100-yard breaststroke (57.36). He attended the University of Southern California (USC), where he swam for the USC Trojans swimming and diving team from 1972 to 1975. As a college swimmer, he was recognized as an All-American in 1972 (100-yard breaststroke, 200-yard breaststroke), 1973 (100-yard breaststroke, 200-yard breaststroke, 400-yard medley relay), 1974 (100-yard breaststroke, 200-yard breaststroke, 400-yard medley relay), and 1975 (100-yard breaststroke, 200-yard breaststroke, 200-yard individual medley, 400-yard medley relay).
An accomplished Baroque and period musician, vocalist and composer, he played cello and was a countertenor.
Chatfield came out of retirement in 1994 to participate in the Gay Games. He recounted how "he could never disclose his sexuality for fear of losing his spot on the team."[1]
Chatfield died of lymphoma on December 23, 1998; he was 45 years old.
