| Club: | Strømsgodset |
| Season: | 2021 |
| Chairman: | Ivar Strømsjordet |
| Mgrtitle: | Manager(s) |
| Manager: | Bjørn Petter Ingebretsen Håkon Wibe-Lund |
| Stadium: | Marienlyst Stadion |
| League: | Eliteserien |
| League Result: | 9th |
| Cup1: | Norwegian Cup |
| Cup1 Result: | Fourth round |
| League Topscorer: | Fred Friday (7) |
| Season Topscorer: | Fred Friday Johan Hove (7) |
| Pattern La1: | _pumafinal21n |
| Pattern B1: | _pumafinal21n |
| Pattern Ra1: | _pumafinal21n |
| Leftarm1: | 000060 |
| Body1: | 000060 |
| Rightarm1: | 000060 |
| Shorts1: | FFFFFF |
| Socks1: | FFFFFF |
| Pattern La2: | _pumafinalg21w |
| Pattern B2: | _pumafinalg21w |
| Pattern Ra2: | _pumafinalg21w |
| Leftarm2: | FFFFFF |
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| Shorts2: | 000060 |
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| Prevseason: | 2020 |
| Nextseason: | 2022 |
The 2021 season was Strømsgodset Toppfotball's 114th season in existence and the club's 15th consecutive season in the top flight of Norwegian football. In addition to the domestic league, Strømsgodset Toppfotball participated in this season's edition of the Norwegian Football Cup.
See main article: List of Norwegian football transfers winter 2020–21. In:[2] [3] [4] Out:[5]
See main article: List of Norwegian football transfers summer 2021. In:[6] Out:[7] [8] [6] [6] [9] [10]
See main article: 2021 Eliteserien.
See main article: 2021 Norwegian Football Cup.
Fourth round took place during the 2022 season.