2015 Mjøndalen IF Fotball season

The 2015 season is Mjøndalen's 105th season, and their first Tippeligaen season for 22 years. It is their 10th season with Vegard Hansen as manager, during which they will compete in the Norwegian Cup as well as the Tippeligaen.

Winter
In:

Out:

Summer
In:

Out:

Appearances and goals

 * colspan="14"|Players away from Mjøndalen on loan:
 * colspan="14"|Players away from Mjøndalen on loan:


 * colspan="14"|Players who appeared for Mjøndalen no longer at the club:
 * colspan="14"|Players who appeared for Mjøndalen no longer at the club:


 * }