Sarah Wellbrock (née Köhler; born 20 June 1994) is a retired German swimmer, former World record holder, who won gold medal at 2019 World Championships and gold in 2017 European Swimming Championships (SC).

In the women's 400 metre freestyle, she finished 10th in the heats and did not qualify for the final.

[4] She was also a member of the 4 × 200 m freestyle relay team which finished 12th in the heats and did not qualify for the final.

[6] In the women's 1500 metre freestyle, she finished 6th in the heats and qualified for the final, winning the bronze medal.

[7] In January 2022, Köhler married distance freestyle swimmer Florian Wellbrock of Germany, they got engaged in December 2020.