| Markus Karlsbakk | |
| Fullname: | Markus Seehusen Karlsbakk |
| Birth Date: | 7 May 2000 |
| Birth Place: | Ålesund, Norway |
| Height: | 1.80 m |
| Currentclub: | Lillestrøm |
| Clubnumber: | 21 |
| Position: | Midfielder |
| Youthclubs1: | Aksla |
| Youthclubs2: | Aalesund |
| Years1: | 2017–2024 |
| Clubs1: | Aalesund |
| Caps1: | 55 |
| Goals1: | 9 |
| Years2: | 2020 |
| Clubs2: | → Hødd (loan) |
| Caps2: | 0 |
| Goals2: | 0 |
| Years3: | 2021–2022 |
| Clubs3: | → Raufoss (loan) |
| Caps3: | 61 |
| Goals3: | 9 |
| Years4: | 2024– |
| Clubs4: | Lillestrøm |
| Caps4: | 0 |
| Goals4: | 0 |
| Pcupdate: | 17 July 2024 |
| Ntupdate: | 29 December 2018 |
Markus Seehusen Karlsbakk (born 7 May 2000) is a Norwegian football player who plays as a central midfielder for Aalesund in Eliteserien.
He made his debut for Aalesunds on 8 July 2017 in a 3-0 loss against local rival Molde. On 23 November 2018 he signed his first professional contract with Aalesunds. On 14 March 2023 he signed an extension to his current contract which will keep him at Aalesunds until 2025.