2021 Thoreau Tennis Open – Doubles

Angela Kulikov and Rianna Valdes were the defending champions, having won the previous edition in 2019 but lost in the quarterfinals to Usue Maitane Arconada and Cristina Bucșa.

Peangtarn Plipuech and Jessy Rompies won the title, defeating Arconada and Bucșa in the final, 3–6, 7–6(7–5), [10–8].

Seeds
• # Hsieh Su-wei / Hsieh Yu-chieh (quarterfinals)

• # 🇮🇳 Ankita Raina / 🇬🇧 Eden Silva (Silva withdrew due to illness; Raina re-paired with Mona Barthel)

• # 🇺🇦 Kateryna Bondarenko / 🇩🇪 Tatjana Maria (quarterfinals)

• # 🇺🇸 Quinn Gleason / 🇺🇸 Jamie Loeb (first round)