John Joseph O'Toole (born 30 September 1988) is a professional footballer who plays as a defender for EFL League Two club AFC Wimbledon.

[5] Born in Harrow, Greater London,[6] O'Toole spent the end of the 2006–07 season on loan at Wealdstone in the Southern Football League Premier Division where he made nine appearances and scored three goals.

[11] His third goal for the club came on 26 January 2008 in a 4–1 home defeat against Wolverhampton Wanderers in the FA Cup fourth round.

[12] O'Toole signed a three-month loan deal for Sheffield United in February 2009[13] making his debut a couple of weeks later in a 2–1 away victory over Coventry City.

[14] O'Toole went on to make nine appearances for The Blades that season, scoring one goal in a local derby against Barnsley at the start of April.

[20] Groin problems had restricted him to just 16 appearances in the 2011–12 season, but on 7 June 2012, O'Toole signed a new two-year deal, keeping the midfielder at the club until 2014.

Manager Ward expressed interest in signing him permanently over the summer, with O'Toole still having one year to run on his Colchester contract.

[27] After a long protracted transfer saga, O'Toole signed a three-year contract with Bristol Rovers, joining for an undisclosed fee on 24 July 2013.

[37] On 18 June 2024, O'Toole agreed to return to AFC Wimbledon on a permanent basis upon the expiration of his contract with Mansfield Town.