Marlen Reusser (born 20 September 1991) is a Swiss racing cyclist, who currently rides for UCI Women's WorldTeam Team SD Worx–Protime.

During her year with the WCC she finished third at the BeNe Ladies Tour and sixth in the World Championship individual time trial.

[4] She also rode in the individual time trial at the 2020 UCI Road World Championships in Imola, where she won the silver medal.

[6] For the 2021 season, Reusser joined the Alé BTC Ljubljana team, following the collapse of Équipe Paule Ka.

[7] She rode in the individual time trial at the 2021 UCI Road World Championships in Brugge, where she won the bronze medal.