Yannick Mertens (born 25 June 1987) is a professional former tennis player from Belgium who mainly has played on the ATP Challenger Tour.

On 27 July 2015, he reached his highest ATP singles ranking of world No.

He was born in Anderlecht and currently resides in Ternat.

His favorite surface is clay, and he is coached by his father Kris Mertens.

[1] This biographical article relating to Belgian tennis is a stub.