The attack-minded full-back has joined for the rest of the season with Latics boss Roberto Martinez pinpointing the player’s technical ability and versatility as two key selling points.
Van Aanholt has become the third player to join Wigan in just over a day after Albert Crusat arrived from Spanish Segunda side Almeria and Shaun Maloney’s signing from Celtic.
Speaking to the club’s official website about his new signing, Martinez said: "Patrick is a player with enormous potential. Technically he is very gifted, very comfortable in possession and physically, he uses his intensity to defend very effectively.
"He can play left back or left wing back position and without a doubt he's got a phenomenal career ahead of him and I hope he can settle in Wigan really quickly and start enjoying his football as a Latics player."
Martinez cited Manchester United’s Tom Cleverley as inspiration for this latest signing after the young English midfielder’s impressive loan spell at the DW Stadium last season.
"Like Tom Cleverley last year, he is a young player who is hungry to learn his trade and I feel both parties can benefit hugely from the move. We are delighted to welcome him on board," added Martinez.
"We rate Patrick really highly and his professionalism and his personal attributes will be a huge asset to us this season. “Other than two Premier League appearances for Chelsea, the PSV Eindhoven youth product has had loan spells at Coventry City, Newcastle United and Leicester City.