The 2015 Stockholm Open (also known as the 2015 If Stockholm Open for sponsorship reasons) was a professional men's tennis tournament played on indoor hard courts.

It was the 47th edition of the tournament, and part of the ATP World Tour 250 series of the 2015 ATP World Tour.

It took place at the Kungliga tennishallen in Stockholm, Sweden from 20 to 25 October 2015.

The following players received wildcards into the singles main draw: The following players received entry from the qualifying draw: The following player received entry as a lucky loser: The following pairs received wildcards into the doubles main draw: