2012 Lillestrøm SK season

The 2012 season saw Lillestrøm compete in the Tippeligaen as well as the 2012 Norwegian Football Cup. They finished the season in 9th in the Tippeligaen and they were knocked out of in the Fourth Round by Bodø/Glimt. It was the club's first season with Magnus Haglund as their manager.

Winter
In:

Out:

Summer
In:

Out:

Appearances and goals

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


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


 * }