Jack O'Reilly (born 7 May 1914, date of death unknown) was an Irish footballer.
However shortly afterwards he became embroiled in controversy when it emerged that, together with Owen Madden, he had signed for Norwich City before playing in the cup final on 19 April.
When Cork F.C., who received no fee, protested over the moves, both O'Reilly and Madden were suspended by the FAI for three years.
Although he scored twice on his Norwich debut he was never a regular and returned to Cork in 1939 where he went on to win six League of Ireland championships and 2 FAI Cups.
He scored on his debut on 16 June in a 3-1 defeat to Portugal and seven days later won his only other cap in a 1-0 win over Spain in Madrid.