John Francary O'Reilly (born August 4, 1940) is a Canadian politician.
O'Reilly represented the riding as a Liberal.
During his tenure, O'Reilly was re-elected twice, and served as the Parliamentary Secretary to the Minister of Defence from 2000 to 2003 under the Chrétien government.
He unsuccessfully ran for re-election in 2004, and was succeeded by 1993 Reform Party candidate for the riding, Barry Devolin.
[1] Following his defeat, he returned to his career as a real estate broker.