WTA Slovenia Open
| Slovenia Open | |
|---|---|
| Defunct tennis tournament | |
| Founded | 2005 | 
| Abolished | 2022 | 
| Editions | 7 | 
| Location | Portorož Slovenia  | 
| Category | Tier IV (2005–2008)  WTA International (2009–2010) WTA 250 (2021–present)  | 
| Surface | Hard / outdoor | 
| Draw | 32M / 24Q / 16D | 
| Prize money | $235,238 | 
| Website | Slovenia Open | 
| Current champions (2022) | |
| Women's singles | Kateřina Siniaková | 
| Women's doubles |  Marta Kostyuk  Tereza Martincová  | 
The Slovenia Open was a women's tennis tournament held in Portorož, Slovenia, originally from 2005 until 2010, and returned to the tour in 2021 and 2022. The WTA Tour event was a WTA International category, and then transitioned to its most recent variant, the WTA 250 category. It was played on outdoor hardcourts.
Katarina Srebotnik finished runner-up in the singles finals of 2005 and 2007, and in the doubles final in 2005.