Markus Rooth (born 22 December 2001) is a Norwegian track and field athlete.

[2] In 2020, competing in Bislett, Rooth finished on 8238 points in the decathlon, which places him second in the world U20 all-time standings behind only Niklas Kaul.

[3] In 2022, Rooth set a Norwegian record in the decathlon with 8307 points in competition in Grosseto, Italy.

[7] Competing in the decathlon at the 2024 European Athletics Championships in Rome in June 2024, he was contending for a medal before having to pull-out of the competition after sustaining an injury during the pole vault aspect of the event.

[8] He won the gold medal in Paris at the 2024 Summer Olympics in the decathlon, finishing in first place overall with a national record tally of 8796 points.