Lorna Johnstone
The oldest woman to compete in the Olympics was British rider Lorna Johnstone, who participated in Equestrian at the 1972 Olympic Games at 70 years and 5 days old.
Oldest Female Gold Medalist
Lida Peyton "Eliza" Pollock won gold aged 63 years and 333 days, though as part of a team event. The oldest woman ever to win an Olympic gold medal in an individual event was British archery winner Sybil “Queenie” Newall who won gold in the Double National Round in 1908, aged 53 years, 275 days.