| Marius Larsen | |
| Fullname: | Marius Bustgaard Larsen |
| Birth Date: | 14 May 2000 |
| Position: | Midfielder |
| Currentclub: | Tromsdalen |
| Clubnumber: | 23 |
| Youthclubs1: | Odd |
| Years1: | 2018–2020 |
| Caps1: | 6 |
| Goals1: | 0 |
| Clubs1: | Odd |
| Years2: | 2021 |
| Caps2: | 0 |
| Goals2: | 0 |
| Clubs2: | Holstein Kiel |
| Years3: | 2021–2022 |
| Caps3: | 38 |
| Goals3: | 27 |
| Clubs3: | Pors |
| Years4: | 2023– |
| Caps4: | 34 |
| Goals4: | 14 |
| Clubs4: | Tromsdalen |
| Nationalyears1: | 2015 |
| Nationalteam1: | Norway U15 |
| Nationalcaps1: | 3 |
| Nationalgoals1: | 0 |
| Nationalyears2: | 2016 |
| Nationalteam2: | Norway U16 |
| Nationalcaps2: | 4 |
| Nationalgoals2: | 1 |
| Nationalyears3: | 2017 |
| Nationalteam3: | Norway U17 |
| Nationalcaps3: | 2 |
| Nationalgoals3: | 0 |
| Nationalyears4: | 2019 |
| Nationalteam4: | Norway U19 |
| Nationalcaps4: | 1 |
| Nationalgoals4: | 0 |
| Club-Update: | 12 June 2024 |
Marius Bustgaard Larsen (born 14 May 2000) is a Norwegian footballer who plays as a midfielder for Tromsdalen.