Mark Leon Medlock (born 9 July 1978) is a German singer and the winner of the season 4 of Deutschland sucht den Superstar (DSDS), the German version of Pop Idol.

At the age of 6, Medlock began singing gospel, widely influenced by his father and soul singers such as James Brown and Barry White.

In the meantime Medlock made a living with various jobs, including employment as a geriatric orderly, gardener, swamper, and garbage remover.

[citation needed] He had wowed the audience and the judges with his first performance in the Top 20 motto show and so on to the final.

Medlock eventually won the competition with 78.02% of the votes against Martin Stosch who originally placed fourth but returned because of Max Buskohl's withdrawal.