John Irwin (born 31 May 1969, Doncaster), known as Jon Jo Irwin, is a retired English amateur featherweight and professional feather/super featherweight boxer of the 1990s.
As an amateur he represented England and won a gold medal in the -57 kg featherweight division, at the 1990 Commonwealth Games in Auckland, New Zealand.
He also won the prestigious 1991 ABA featherweight championship, against Mark Bowershttp://boxrec.com/list_bouts.php?human_id=20741&cat=boxer (Pinewood Starr ABC (Crowthorne), boxing out of Tom Hill ABC (Doncaster).
As a professional won the Irish featherweight title, World Boxing Board (WBB) super featherweight title, World Boxing Organization (WBO) Inter-Continental featherweight title, British Boxing Board of Control (BBBofC) British featherweight title, and Commonwealth featherweight title, and was a challenger for the BBBofC British featherweight title against Paul Ingle, and European Boxing Union (EBU) featherweight title against Steve Robinson, his professional fighting weight varied from , i.e. featherweight to , i.e. super featherweight.