| Stockholm Open | |
|---|---|
 | |
| Tournament information | |
| Founded | 1969 |
| Location | Stockholm Sweden |
| Venue | The Royal Tennis Hall |
| Category | Grand Prix tennis circuit (1970–1989) Super 9 />(1990–1994) ATP World Series / ATP International Series / ATP World Tour 250 series (1995-present) |
| Surface | Hard (indoor) (1969–1979, 1981–1988, since 1995) Carpet (indoor) (1980, 1989–1994) |
| Draw | 28S / 16Q / 16D |
| Prize money | EUR 690.000 |
| Website | bnppnordicopen.com |
| Current champions (2023) | |
| Men's singles |  Gaël Monfils |
| Men's doubles |  Andrey Golubev  Denys Molchanov |
Stockholm Open (SO) is an annual tennis tournament in Sweden that is part of the ATP Tour's 250 Series. The tournament features both men's singles and doubles events and is organized by the Royal Lawn Tennis Club (KLTK), Stockholms Allmänna Lawn Tennis Klubb (Salk), and the Stockholm Tennis Federation. Stockholm Open has been played on hard courts at the Royal Tennis Hall since 1969, except for the period between 1989 and 1994, when it was held in the Globe Arena. The tournament is traditionally held in October and November. In 2020, the event was canceled due to the COVID-19 pandemic.
From the 2023 edition onwards, the tournament's official name was changed to Nordic Open after the global bank BNP Paribas joined as a title sponsor.