Johannes Høsflot Klæbo (born 22 October 1996) is a Norwegian cross-country skier who represents Byåsen IL.

[11][12] Klæbo made his debut in the World Cup in the 2015–16 season in the classic sprint in Drammen, Norway on 3 February 2016.

[13] In the following 2016–17 season, Klæbo achieved his first World Cup podium after finishing third in the classic sprint in Ruka, Finland, on 26 November 2016.

[15] He competed at the FIS Nordic World Ski Championships 2017 in Lahti, Finland, winning a bronze medal at the Men's sprint competition.

By winning the sprint, Klæbo became the youngest male winner of a World Championship race in cross-country skiing.

Together with Emil Iversen, Klæbo won the team sprint after beating Russia's Alexander Bolshunov in the last stages of the final leg.

On 1 March, Klæbo raced the 4th leg on Norway's team who won the 4 × 10-kilometre relay on the second-to-last event of the championships.

[39] However, the next World Cup stop on home snow in Lillehammer was cancelled due to the ongoing COVID-19 pandemic, and the race programme of Klæbo and his team-mates was further disrupted after the Norwegian, Swedish and Finnish teams elected not to compete in the subsequent World Cup rounds in December due to concerns regarding the risks of the pandemic[40] and then also withdrew from the Tour de Ski after the three Nordic nations' request for the race to be shortened were refused by the International Ski Federation.

[44] At the World Championships in Oberstdorf, Klæbo started his campaign by successfully defending his title in the sprint, leading home team-mates Erik Valnes and Håvard Solås Taugbøl in a clean sweep of the podium positions for Norway, becoming the first man to win consecutive sprint world titles and the second skier overall, after fellow Norwegian Marit Bjørgen.

[46] Klæbo secured another gold in the relay, where he took the anchor leg after team-mates Pål Golberg, Hans Christer Holund and Emil Iversen, holding off Bolshunov for the win.

[47] However, he missed out on a fourth title at the worlds when he was disqualified in the 50 km classic after being first to cross the finish line, as he was judged to have obstructed Bolshunov in the final sprint, handing the victory to team-mate Iversen.

[58] Klæbo was given a non-custodial prison sentence of 16 days and a fine of NOK 10,000 by Sør-Trøndelag district court on 5 March 2019, following a road traffic accident on 12 December 2018, where he collided with a stationary car at a pedestrian crossing.