(gold) Irene Steer
1912 swimming - 4x100 m freestyle relay
(silver/gold) Irene Guest
1920 swimming - 100 m freestyle; swimming - 4x100 m freestyle relay
(bronze) Irene MacDonald
1956 diving - springboard
(bronze) Martha Randall (a.k.a. Irene)
1964 swimming - 400 m medley
(bronze) Irene de Kok
1992 judo
(bronze) Irene Montrucchio
2012 synchronized swimming - team