| Club: | Lillestrøm |
| Season: | 2017 |
| Manager: | Arne Erlandsen |
| Mgrtitle: | Manager |
| Chairman: | Per Mathisen |
| Chrtitle: | Chairman |
| Stadium: | Åråsen Stadion |
| League: | Eliteserien |
| League Result: | 12th |
| Cup1: | Norwegian Cup |
| Cup1 Result: | Winners |
| League Topscorer: | Erling Knudtzon (8) |
| Season Topscorer: | Erling Knudtzon (9) |
| Prevseason: | 2016 |
| Nextseason: | 2018 |
The 2017 season is Lillestrøm's 41st consecutive year in Eliteserien and their first full season with Arne Erlandsen as manager.
See main article: List of Norwegian football transfers winter 2016–17. In:[3] [4] [5] [6] [7] [7] [8] [9] [10] [11] Out:[7] [7] [12] [13] [13] [7] [14] [7] [15] [7] [7] [7] [16] [13] [17] [7] [18]
See main article: List of Norwegian football transfers summer 2017. In:[19] [20] [21] [22] Out:[23] [24] [25] [26] [27] [28]
See main article: 2017 Eliteserien.
See main article: 2017 Norwegian Football Cup.
See main article: 2017 Norwegian Football Cup final.
|-|colspan="14"|Players away from Lillestrøm on loan:|-|colspan="14"|Players who left Lillestrøm during the season:|}
| width=60 | Place | width=60 | Position | width=60 | Nation | width=60 | Number | width=200 | Name | width=80 | Tippeligaen | width=120 | Norwegian Cup | width=80 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | FW |  | 11 | Erling Knudtzon | 8 | 1 | 9 | ||||||||
| 2 | DF | | 13 | Frode Kippe | 5 | 2 | 7 | ||||||||
| DF | | 33 | Aleksander Melgalvis | 4 | 3 | 7 | |||||||||
| DF | | 3 | Simen Kind Mikalsen | 4 | 3 | 7 | |||||||||
| 5 | MF | | 14 | Fredrik Krogstad | 5 | 1 | 6 | ||||||||
| 6 | DF | | 5 | Simen Rafn | 2 | 1 | 3 | ||||||||
| MF |  | 27 | Michal Škoda | 1 | 2 | 3 | |||||||||
| MF | 23 | Chigozie Udoji | 3 | 0 | 3 | ||||||||||
| MF | 6 | Ifeanyi Mathew | 3 | 0 | 3 | ||||||||||
| 10 | MF | | 15 | Erik Brenden | 2 | 0 | 2 | ||||||||
| DF | | 2 | Mats Haakenstad | 1 | 1 | 2 | |||||||||
| FW | 9 | Bajram Ajeti | 0 | 2 | 2 | ||||||||||
| FW | 10 | Marco Tagbajumi | 0 | 2 | 2 | ||||||||||
| 14 | FW |  | 7 | Tomáš Malec | 1 | 0 | 1 | ||||||||
| MF | 18 | Bonke Innocent | 0 | 1 | 1 | ||||||||||
| Own goal | 1 | 0 | 1 | ||||||||||||
| TOTALS | 40 | 19 | 59 | ||||||||||||
| Number | Nation | Position | Name | Tippeligaen | Norwegian Cup | Total | |||||
| width=60 style="background: #FFEE99" | width=60 style="background: #FF8888" | width=60 style="background: #FFEE99" | width=60 style="background: #FF8888" | width=60 style="background: #FFEE99" | width=60 style="background: #FF8888" | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | GK | Marko Marić | 0 | 0 | 1 | 0 | 1 | 0 | |||
| 3 | | DF | Simen Kind Mikalsen | 2 | 0 | 1 | 0 | 3 | 0 | ||
| 4 | | DF | Marius Amundsen | 6 | 1 | 0 | 0 | 6 | 1 | ||
| 5 | | DF | Simen Rafn | 2 | 0 | 0 | 0 | 2 | 0 | ||
| 6 | MF | Ifeanyi Mathew | 1 | 0 | 1 | 0 | 2 | 0 | |||
| 7 | | FW | Tomáš Malec | 1 | 0 | 0 | 0 | 1 | 0 | ||
| 8 | MF | Charles Ezeh | 0 | 0 | 1 | 0 | 1 | 0 | |||
| 9 | FW | Bajram Ajeti | 3 | 0 | 1 | 0 | 4 | 0 | |||
| 10 | FW | Marco Tagbajumi | 2 | 0 | 0 | 0 | 2 | 0 | |||
| 11 | | FW | Erling Knudtzon | 4 | 0 | 0 | 0 | 4 | 0 | ||
| 13 | | DF | Frode Kippe | 4 | 0 | 1 | 0 | 5 | 0 | ||
| 14 | | MF | Fredrik Krogstad | 1 | 0 | 0 | 0 | 1 | 0 | ||
| 15 | | MF | Erik Brenden | 1 | 0 | 1 | 0 | 2 | 0 | ||
| 18 | MF | Bonke Innocent | 1 | 1 | 0 | 0 | 1 | 1 | |||
| 22 |  | MF | Stefan Antonijevic | 1 | 0 | 0 | 0 | 1 | 0 | ||
| 23 | MF | Chigozie Udoji | 2 | 0 | 1 | 0 | 3 | 0 | |||
| 33 | | DF | Aleksander Melgalvis | 2 | 0 | 0 | 0 | 2 | 0 | ||
| 77 |  | GK | Arnold Origi | 2 | 0 | 0 | 0 | 2 | 0 | ||
| TOTALS | 33 | 2 | 10 | 0 | 43 | 2 | |||||