| Date: | 12–17 August 2019 |
| Edition: | 1st |
| Surface: | Hard |
| Location: | Concord, Massachusetts, United States |
| Category: | ITF Women's World Tennis Tour |
| Prize Money: | $60,000 |
| Champs: |  Caroline Dolehide |
| Champd: | Angela Kulikov / Rianna Valdes |
| After Year: | 2021 |
The 2019 Thoreau Tennis Open was a professional tennis tournament played on outdoor hard courts. It was the first edition of the tournament which was part of the 2019 ITF Women's World Tennis Tour. It took place in Concord, Massachusetts, United States between 12 and 17 August 2019.[1]
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Christina McHale | 103 | 1 | ||
 Montenegro | Danka Kovinić | 114 | 2 | |
 China | Zhu Lin | 125 | 3 | |
 Ukraine | Katarina Zavatska | 133 | 4 | |
 Romania | Ana Bogdan | 134 | 5 | |
| Ukraine | Anhelina Kalinina | 136 | 6 | |
 Russian Federation | Varvara Flink | 143 | 7 | |
| Allie Kiick | 150 | 8 |
The following players received wildcards into the singles main draw:
Brittany Collens Caroline Dolehide Elizabeth Halbauer Claire LiuThe following players received entry from the qualifying draw:
Sophie Chang
Magdalena Fręch
Olga Govortsova
Paula Ormaechea
Nina Stojanović
Fanny Stollár Sophia Whittle You XiaodiSee main article: 2019 Thoreau Tennis Open – Singles.
Caroline Dolehide def. Ann Li, 6–3, 7–5See main article: 2019 Thoreau Tennis Open – Doubles.
Angela Kulikov / Rianna Valdes def. Elizabeth Halbauer / Ingrid Neel, 7–6(7–3), 4–6, [17–15]