Lady Mary Elizabeth Peters LG CH DBE (born 6 July 1939) is a retired athlete and sportsperson from Northern Ireland. She won a gold medal at the 1972 Olympic Games for pentathlon, as well as three gold medals in the Commonwealth Games in shot put and pentathlon.
She founded the Mary Peters Trust which helps young people in Northern Ireland to take part in sport. She was also Lord Lieutenant of Belfast from 2009 to 2014.
She was made a dame in 2000, a Companion of Honour in 2015, and a Lady Companion of the Order of the Garter in 2019.
