The 2018 Stockholm Open (also known as the Intrum Stockholm Open for sponsorship purposes) was a professional men's tennis tournament played on indoor hard courts.

It was the 50th edition of the tournament, and part of the ATP World Tour 250 series of the 2018 ATP World Tour.

It took place at the Kungliga tennishallen in Stockholm, Sweden from 15 to 21 October 2018.

Third-seeded Stefanos Tsitsipas won the singles title.

[4] 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: