| Doubles | |
|---|---|
| 2020 St. Petersburg Ladies' Trophy | |
| Champions |  Shuko Aoyama Ena Shibahara |
| Runners-up |  Kaitlyn Christian  Alexa Guarachi |
| Score | 4–6, 6–0, [10–3] |
Margarita Gasparyan and Ekaterina Makarova were the defending champions, [1] but Gasparyan chose not to defend her title. Makarova retired from professional tennis in January 2020.
Shuko Aoyama and Ena Shibahara won the title, defeating Kaitlyn Christian and Alexa Guarachi in the final, 4–6, 6–0, [10–3].
Shuko Aoyama / Ena Shibahara (champions)
Lyudmyla Kichenok / Nadiia Kichenok (first round) Kaitlyn Christian / Alexa Guarachi (final) Hayley Carter / 
Sharon Fichman (semifinals)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | S Aoyama E Shibahara | 4 | 6 | [10] | |||||||||||||||||||||||
 D Jurak  L Marozava | 6 | 1 | [5] | 1 | S Aoyama E Shibahara | 6 | 6 | ||||||||||||||||||||
 A Rosolska  A Tomljanović | 64 | 6 | [3] |  A Potapova  Y Putintseva | 1 | 2 | |||||||||||||||||||||
| A Potapova Y Putintseva | 77 | 4 | [10] | 1 | S Aoyama E Shibahara | 6 | 6 | ||||||||||||||||||||
| 4 | H Carter S Fichman | 6 | 6 | 4 | H Carter S Fichman | 2 | 3 | ||||||||||||||||||||
| E Alexandrova V Zvonareva | 2 | 1 | 4 | H Carter S Fichman | 6 | 6 | |||||||||||||||||||||
| M Adamczak Y Sizikova | 6 | 6 | M Adamczak Y Sizikova | 3 | 3 | ||||||||||||||||||||||
| V Diatchenko N Dzalamidze | 4 | 2 | 1 | S Aoyama E Shibahara | 4 | 6 | [10] | ||||||||||||||||||||
| PR | A Kudryavtseva  K Srebotnik | 6 | 2 | [10] | 3 | K Christian A Guarachi | 6 | 0 | [3] | ||||||||||||||||||
 O Kalashnikova  A Mitu | 3 | 6 | [6] | PR | A Kudryavtseva K Srebotnik | 3 | 5 | ||||||||||||||||||||
| WC | D Mishina E Shalimova | 2 | 2 | 3 | K Christian A Guarachi | 6 | 7 | ||||||||||||||||||||
| 3 | K Christian A Guarachi | 6 | 6 | 3 | K Christian A Guarachi | 6 | 7 | ||||||||||||||||||||
 C Garcia  J Konta | 6 | 3 | [10] | C Garcia J Konta | 4 | 5 | |||||||||||||||||||||
 V Heisen V Strakhova | 3 | 6 | [5] | C Garcia J Konta | 6 | 6 | |||||||||||||||||||||
 C Lister  R Voráčová | 6 | 7 | C Lister R Voráčová | 2 | 2 | ||||||||||||||||||||||
| 2 | L Kichenok N Kichenok | 4 | 5 | ||||||||||||||||||||||||
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