Eileen Duffy-O'Mahoney was an Irish sportsperson who played senior camogie with Dublin from 1949 until 1957. She is regarded as one of the greatest camogie goalkeeper of all-time.
Eileen Duffy was born in Dublin. She showed great skill at the game of camogie in her youth and quickly joined her local Celtic camogie club. It was with this club that Duffy first tasted success, and she later won five Dublin county camogie titles. She quickly came to the attention of the Dublin senior camogie selectors and made her senior inter-county debut in 1949. It was a golden era for Dublin camogie, and Duffy won seven [[All-Ireland Senior Camogie Championship|All-Ireland] medals in-a-row, beginning in her debut year. Her skills were particularly noted in 1951 as ashe was named as Sports Star of the Year. Three years later in 1954 Duffy was the Leinster goalkeeper when the first inter-provincial game was played in Navan to mark the Golden Jubilee of Cumann Camogaíochta na nGael in 1954. In 1956 Antrim brought an end to Dublin's camogie domonance, however, "the Dubs" returned in 1957 with Duffy as captain. It was another successful year as she captured her eighth and final All-Ireland medal.
In 2004 Duffy was honoured by being named as the goalkeeper of the Camogie Team of the Century.