The Latics, who finished 23rd in the Championship and were relegated as a result, have been looking for a new manager since Warren Joyce’s departure.
The former Sligo Rovers boss leaves Portsmouth, who he guided to the League Two title last season, and has signed a three-year contract at the DW Stadium.
He also led Chesterfield to the League Two title in 2013-14 and almost helped them secure a second consecutive promotion, as they lost out in the semi-finals of the play-offs the following season.
Cook made 95 appearances for Wigan in two spells there as a player but is most famous in Ireland for leading Sligo Rovers to two FAI Cups and a League Cup.
Former Sligo Rovers boss lands Wigan role
Updated at 23.28
PAUL COOK IS the new manager of Wigan Athletic, the club have confirmed.
The Latics, who finished 23rd in the Championship and were relegated as a result, have been looking for a new manager since Warren Joyce’s departure.
The former Sligo Rovers boss leaves Portsmouth, who he guided to the League Two title last season, and has signed a three-year contract at the DW Stadium.
He also led Chesterfield to the League Two title in 2013-14 and almost helped them secure a second consecutive promotion, as they lost out in the semi-finals of the play-offs the following season.
Cook made 95 appearances for Wigan in two spells there as a player but is most famous in Ireland for leading Sligo Rovers to two FAI Cups and a League Cup.
The news is a further blow to Portsmouth, who recently lost Irish full-back Enda Stevens to Championship side Sheffield United.
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familiar face League of Ireland LOI Paul Cook Sligo Rovers Wigan Athletic Warren Joyce