2018 Lillestrøm SK season

The 2018 season was Lillestrøm's 42nd consecutive year in Eliteserien.

Season events
On 26 June, Arne Erlandsen was sacked as the club manager, with Arild Sundgot being appointed as an interim manager. On 13 July, Jörgen Lennartsson was appointed the club's new 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 left Lillestrøm during the season:
 * }
 * }