Tomas Mårten Klingberg (born April 1, 1968) is a Swedish actor, screenwriter and director. Klingberg is best known for his role as Nick in the films about the police detective Martin Beck.
| Movie | Andra akten | 2023 |
| Movie | Ur spår | 2022 |
| Movie | Beck 31 - Gunvald | 2016 |
| Movie | Beck 35 - Flesh & Blood | 2018 |
| Movie | Cockpit | 2012 |
| Movie | Beck 32 - Steinar | 2016 |
| Movie | Beck: The Last Day | 2016 |
| Movie | Beck 27 - Rum 302 | 2015 |
| Movie | Viktor och hans bröder | 2002 |
| Movie | Min pappa Marianne | 2020 |
| Movie | Beck 28 - Familjen | 2015 |
| Movie | Beck 31 - Gunvald | 2016 |
| Movie | Beck 35 - Flesh & Blood | 2018 |
| Movie | Beck 28 - Familjen | 2015 |
