Jack Debreczeni (born 6 June 1993) is an Australian rugby union player who currently plays as a fly-half for the Melbourne Rebels in the international Super Rugby competition.
Debreczeni initially made a name for himself playing for West Harbour in the 2013 Shute Shield in New South Wales. Just one season at that level was enough to convince the Melbourne Rebels of his worth and he was handed a place in the franchise's extended playing squad for the 2014 Super Rugby season .
Injury blighted the first half of his season, however he regained full fitness in May and was an unused replacement for the Rebels victory over the Reds on May 17. He made his Super Rugby debut the following week as a 74th minute substitute for Jason Woodward in a 19-41 defeat to the Waratahs in Melbourne.
Debreczeni was an Australia Schoolboys representative in 2011.