Olga Gyarmati (Hungarian pronunciation: [ˈolɡɒ ˈɟɒrmɒti]; 5 October 1924 – 27 October 2013) was a Hungarian all-round track and field athlete who competed at three Olympic Games in four different events. Her greatest success was winning the inaugural Olympic Women's Long Jump competition in London in 1948. Additionally, she won two Universiade gold medals and a number of Hungarian Athletics Championships titles in sprint and jumping events.