 | This article needs additional citations for verification. (December 2017) |
| 2018 St. Petersburg Ladies' Trophy | |
|---|---|
| Date | 29 January – 4 February |
| Edition | 9th |
| Category | WTA Premier |
| Prize money | $776,000 |
| Surface | Hard (indoor) |
| Location | Saint Petersburg, Russia |
| Venue | Sibur Arena |
| Champions | |
| Singles | |
 Petra Kvitová | |
| Doubles | |
 Timea Bacsinszky /  Vera Zvonareva | |
The 2018 St. Petersburg Ladies' Trophy was a professional tennis tournament played on indoor hard courts. It was the 9th edition of the tournament and third time as a WTA Premier tournament. It was part of the 2018 WTA Tour and was held between 29 January and 4 February 2018.