Carl Martin Gunnar Wallström Milkéwitz (born 7 July 1983) is a Swedish actor. He is most well-known internationally for his 2015 American debut role as Tyrell Wellick in the USA Network cyber-thriller Mr. Robot.
- Known For: Acting
- Birthday: 1983-07-07
- Place of Birth: Uddevalla, Göteborgs och Bohus län, Sweden
- Also Known As: Martin Wallström Milkéwitz, Martin Wallstrom, Carl Martin Gunnar Wallström Milkéwitz