Karl Ottfalk (born 3 January 2006) is a Swedish long distance and cross country runner.

[1] He won gold in the 3000 metres at the 2022 European Youth Summer Olympic Festival in Slovakia.

[2] In 2023, he won the men's junior race at the Nordic Cross Country Championships.

[3] He finished fourth in the men's U20 race at the 2023 European Cross Country Championships in Brussels at the age of 17 years-old.

[5] In August 2024, he finished sixth at the 2024 World Athletics U20 Championships in Lima, Peru, in the Men's 3000 metres.