In January 2008, Edman was signed by Wigan Athletic for a transfer fee of £500,000. The arrival of Edman was a good deal for Wigan Athletic, since the club did not find a good replacement after the departure of Leighton Baines, the previous summer. In March 2008, Edman was injured in a match against Blackburn Rovers, damaging his anterior crutiate ligament in his knee. This means he missed the rest of Wigan's season, as well as Euro 2008. Edman made his return to the Wigan team, as a substitute in January 2009 at Old Trafford, as Wigan lost 1–0 to Manchester United. However, he has lacked playing time, due to injuries and Maynor Figueroa's impressive performances throughout the season, which have earned him a spot in Roberto Martínez's starting eleven. Edman played his last game in the Latics' 9–1 loss against Tottenham Hotspur in November, where he had a torrid time against Aaron Lennon.