One-day races and Classics Amund Grøndahl Jansen (born 11 February 1994) is a Norwegian cyclist, who currently rides for UCI ProTeam Uno-X Mobility.

[5] In July 2018, he was named in the start list for the 2018 Tour de France.

[6] In June 2019, Grøndahl Jansen won his first professional stage win at Stage 3 of the 2019 ZLM Tour, attacking from a reduced group with one kilometre from the finish.

Later that month, he became Norwegian road champion, winning in a sprint of three riders.

[5] In September 2020, Grøndahl Jansen signed a two-year contract with Mitchelton–Scott, later renamed as Team BikeExchange, from the 2021 season.