Johannes Erm (born March 26, 1998) is an Estonian decathlete and the reigning European champion.

In 2011, he transitioned into track and field and started training with his trainer at the time Holger Peel.

[3] In 2023, after finishing his studies and returning to Estonia, his coach changed back to Holger Peel.

[6] He was selected to compete in the heptathlon at the 2024 World Athletics Championships in Glasgow in March 2024, and finished in third place overall.

[7] Competing in the decathlon he was a gold medalist at the 2024 European Athletics Championships in Rome in June 2024, with a personal best tally of 8764 points.