2018 St. Petersburg Ladies' Trophy

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.

Prize money
1Qualifiers prize money is also the Round of 32 prize money.
 * per team

Seeds

 * 1 Rankings as of January 15, 2018.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇨🇿 Petra Kvitová
 * 🇷🇺 Anastasia Potapova
 * 🇷🇺 Elena Vesnina
 * 🇷🇺 Vera Zvonareva

The following players received entry from the qualifying draw:
 * 🇸🇰 Viktória Kužmová
 * 🇨🇿 Tereza Martincová
 * 🇷🇺 Elena Rybakina
 * 🇮🇹 Roberta Vinci

The following player received entry as a lucky loser:
 * 🇩🇪 Andrea Petkovic

Withdrawals

 * Before the tournament
 * 🇷🇴 Simona Halep → replaced by 🇩🇪 Andrea Petkovic
 * Ana Konjuh → replaced by 🇩🇪 Tatjana Maria
 * 🇧🇪 Elise Mertens → replaced by Donna Vekić
 * Anastasija Sevastova → replaced by 🇨🇿 Kateřina Siniaková
 * 🇨🇿 Barbora Strýcová → replaced by Maria Sakkari
 * 🇪🇸 Carla Suárez Navarro → replaced by 🇩🇪 Mona Barthel

Retirements

 * Kiki Bertens

Seeds

 * 1 Rankings as of January 15, 2018.

Other entrants
The following pair received a wildcard into the doubles main draw:
 * 🇷🇺 Valeriya Pogrebnyak / 🇷🇺 Elena Rybakina

Singles

 * 🇨🇿 Petra Kvitová def. 🇫🇷 Kristina Mladenovic, 6–1, 6–2

Doubles

 * Timea Bacsinszky / 🇷🇺 Vera Zvonareva def. 🇷🇺 Alla Kudryavtseva / Katarina Srebotnik, 2–6, 6–1, [10–3]