Anders Bleg Christiansen (born 8 June 1990) is a Danish footballer who plays for Allsvenskan club Malmö FF as a midfielder. He used to play with the nickname 'AC' on the back of his shirt.
Christiansen started his senior career at Lyngby BK. He made his debut in the 2008–09 season, making three league appearances. The following season Christiansen earned more playing time and helped Lyngby achieve promotion to the top flight. He excelled as one of Lyngby's key players in the Danish Superliga for the following two seasons, but could not save the team from relegation in their second season.
Christiansen's play in the Superliga earned him attention from the reigning champions FC Nordsjælland. On 25 July 2012, Christiansen was presented as a Nordsjælland player after signing a four-year contract. He made 67 league appearances for the club during his two and a half year stint, and appeared in five games in the 2012–13 UEFA Champions League group stage.