The 2016 MercedesCup was a men's tennis tournament played on grass courts.

It was the 39th edition of the MercedesCup, and part of the ATP World Tour 250 series of the 2016 ATP World Tour.

It was held at the Tennis Club Weissenhof in Stuttgart, Germany, from 6 June until 13 June 2016.

Third-seeded Dominic Thiem won the singles title.

The following players received wildcards into the singles main draw: The following players received entry from the qualifying draw: The following pairs received wildcards into the doubles main draw: