Jonas Abrahamsen (born 20 September 1995) is a Norwegian professional road racing cyclist, who currently rides for UCI ProTeam Uno-X Mobility.

He returned to club level in 2015 with Grenland SK, the squad he had ridden for as a junior.

[4] The following year was a breakthrough season for Abrahamsen, finishing second in the Dwars door Vlaanderen in March.

[6] A week later, he finished second in the Dwars door het Hageland.

[9] After seeking to be as light as possible as a young rider, leading to under-eating, Abrahamsen deliberately gained 20 kg.