The 2011 season is Lillestrøm SK's 22nd season in the Tippeligaen, and their 38th consecutive season in the top division of Norwegian football. It is Henning Berg's third season as the club's manager. On 27 October 2011 with Lillestrom in 12th place, Henning Berg was sacked and replaced by Petter Belsvik who took on a Caretaker role.

Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.

In: Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.

Out: Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.

Last updated: 21 August 2011.
Source: fotball.no

Last updated: 21 August2011.
Source: see below
Ground: A = Away; H = Home. Result: D = Draw; L = Loss; W = Win; P = Postponed.

Updated to games played on 27 November 2011.
Source: Soccerway
Rules for classification: 1) points; 2) goal difference; 3) number of goals scored
¹Aalesund is qualified for the second qualifying round of the UEFA Europa League as winners of the 2011 Norwegian Football Cup.
²Stabæk is qualified for the first qualifying round of the UEFA Europa League via Fair Play rankings.
(C) = Champion; (R) = Relegated; (P) = Promoted; (E) = Eliminated; (O) = Play-off winner; (A) = Advances to a further round.
Only applicable when the season is not finished:
(Q) = Qualified to the phase of tournament indicated; (TQ) = Qualified to tournament, but not yet to the particular phase indicated; (RQ) = Qualified to the relegation tournament indicated; (DQ) = Disqualified from tournament.

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