The St. Petersburg Ladies' Trophy (Russian: Трофей Санкт-Петербурга, romanized: Trofey Sankt-Peterburga; formerly known as the Ladies Neva Cup) is a tournament for professional female tennis players played on indoor hardcourts.

The event is classified as a WTA 500 tournament and was first held in St. Petersburg in 2003.

In 2016, it was upgraded to a WTA Premier tournament in 2016, offering a prize money of $753,000, up from only $25,000 and $50,000 in previous years.

The event replaced the Proximus Diamond Games on the WTA Tour from 2016.

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