| Singles | |
|---|---|
| 2019 Tennis Championships of Honolulu | |
| Champion |  Usue Maitane Arconada |
| Runner-up | Nicole Gibbs |
| Score | 6–0, 6–2 |
Nao Hibino was the defending champion, but chose not to participate. [1]
Usue Maitane Arconada won the title, defeating Nicole Gibbs in the final, 6–0, 6–2.
Whitney Osuigwe (quarterfinals) Nicole Gibbs (final)
Ayano Shimizu (first round)
Arina Rodionova (second round) Usue Maitane Arconada (champion) Risa Ozaki (second round)
Zhang Yuxuan (first round)
Deniz Khazaniuk (second round)| Semifinals | Final | ||||||||||||
| Jamie Loeb | 2 | 4 | |||||||||||
| 5 | Usue Maitane Arconada | 6 | 6 | ||||||||||
| 5 | Usue Maitane Arconada | 6 | 6 | ||||||||||
| 2 | Nicole Gibbs | 0 | 2 | ||||||||||
| Caroline Dolehide | 4 | 78 | 4 | ||||||||||
| 2 | Nicole Gibbs | 6 | 66 | 6 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1/WC | W Osuigwe | 6 | 6 | ||||||||||||||||||||||||
| WC | A Tobita | 4 | 2 | 1/WC | W Osuigwe | 3 | |||||||||||||||||||||
| X You | 7 | 3 | 4 | E Bektas | 2r | ||||||||||||||||||||||
| E Bektas | 5 | 6 | 6 | 1/WC | W Osuigwe | 4 | 6 | 1 | |||||||||||||||||||
| G Brodsky | 4 | 3 | J Loeb | 6 | 4 | 6 | |||||||||||||||||||||
| M Hontama | 6 | 6 | M Hontama | 5 | 3 | ||||||||||||||||||||||
| J Loeb | 6 | 6 | J Loeb | 7 | 6 | ||||||||||||||||||||||
| 7 | Y Zhang | 4 | 1 | J Loeb | 2 | 4 | |||||||||||||||||||||
| 4 | Ar Rodionova | 6 | 6 | 5 | UM Arconada | 6 | 6 | ||||||||||||||||||||
| C Harrison | 4 | 2 | 4 | Ar Rodionova | 1 | 2 | |||||||||||||||||||||
| M Hibi | 6 | 6 | M Hibi | 6 | 6 | ||||||||||||||||||||||
| J Namigata | 4 | 1 | M Hibi | 3 | 3 | ||||||||||||||||||||||
| M Manasse | 7 | 6 | 5 | UM Arconada | 6 | 6 | |||||||||||||||||||||
| Q |  G Olmos | 5 | 2 | M Manasse | 6 | 2 | 2 | ||||||||||||||||||||
| H Baptiste | 3 | 2 | 5 | UM Arconada | 2 | 6 | 6 | ||||||||||||||||||||
| 5 | UM Arconada | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | R Ozaki | 7 | 6 | ||||||||||||||||||||||||
| WC | K Chen | 5 | 4 | 6 | R Ozaki | 5 | 3 | ||||||||||||||||||||
| Q | S Chang | 65 | 3 | K Day | 7 | 6 | |||||||||||||||||||||
| K Day | 77 | 6 | K Day | 7 | 3 | 1 | |||||||||||||||||||||
| WC | N Subhash | 6 | 7 | C Dolehide | 5 | 6 | 6 | ||||||||||||||||||||
| Q |  C Simmonds | 3 | 5 | WC | N Subhash | 2 | 3 | ||||||||||||||||||||
| C Dolehide | 4 | 6 | 6 | C Dolehide | 6 | 6 | |||||||||||||||||||||
| 3 | A Shimizu | 6 | 1 | 1 | C Dolehide | 4 | 78 | 4 | |||||||||||||||||||
| 8 | D Khazaniuk | 1 | 6 | 6 | 2 | N Gibbs | 6 | 66 | 6 | ||||||||||||||||||
| Q | M Ozeki | 6 | 3 | 4 | 8 | D Khazaniuk | 6 | 4 | 1 | ||||||||||||||||||
| Q Gleason | 6 | 6 | Q Gleason | 1 | 6 | 6 | |||||||||||||||||||||
| Q |  F Al-Nabhani | 3 | 0 | Q Gleason | 3 | 1 | |||||||||||||||||||||
| Q | A Parks | 6 | 6 | 2 | N Gibbs | 6 | 6 | ||||||||||||||||||||
| Q |  V Babić | 3 | 4 | Q | A Parks | 2 | 2 | ||||||||||||||||||||
| Q | S Whittle | 63 | 6 | 3 | 2 | N Gibbs | 6 | 6 | |||||||||||||||||||
| 2 | N Gibbs | 77 | 4 | 6 | |||||||||||||||||||||||
Daria Kasatkina was the defending champion, but chose not to participate this year.
Ioana Ducu and Ioana Loredana Roșca were the defending champions, but were not eligible to participate this year.
Unseeded Russian Sofya Zhuk won the title, defeating compatriot and 12th seed Anna Blinkova in the final, 7–5, 6–4.
Tami Grende and Ye Qiuyu were the defending champions, but chose not to participate.
İpek Soylu and Jil Teichmann were the defending champions, but they chose not to participate.
Viktória Kužmová and Aleksandra Pospelova won the title, defeating Anna Kalinskaya and Anastasia Potapova in the final, 7–5, 6–2.
Miriam Kolodziejová and Markéta Vondroušová were the defending champions, but Kolodziejová was ineligible to participate this year. Vondroušová played alongside Anastasia Dețiuc, but lost in the first round to Claire Liu and Charlotte Robillard-Millette.
Dalma Gálfi and Fanny Stollár were the defending champions, but chose not to participate this year.
Viktória Kužmová and Aleksandra Pospelova were the defending champions, however Pospelova was no longer eligible to compete. Kužmová played alongside Federica Bilardo, but lost in the first round to Nicole Frenkel and Sofia Kenin.
Usue Maitane Arconada and Claire Liu were the defending champions, however Arconada was no longer eligible to participate in junior events. Liu partnered Taylor Johnson, but lost in the quarterfinals to María José Portillo Ramírez and Sofia Sewing.
Yanina Wickmayer was the defending champion, but chose not to participate this year.
Anastasia Pavlyuchenkova was the defending champion, but withdrew before the tournament began.
This was the first edition of the tournament.
Misaki Doi and Jessica Pegula were the defending champions, but chose not to participate.
Asia Muhammad was the defending champion, but chose to participate at the 2019 Darwin Tennis International instead.
Caty McNally and Jessica Pegula were the defending champions, but chose not to participate.
Whitney Osuigwe was the defending champion, but lost to Danielle Lao in the quarterfinals.
Bianca Andreescu was the defending champion, but chose not to participate this year.
Wang Yafan was the defending champion, but lost to compatriot Wang Xiyu in the first round.
Usue Maitane Arconada and Caroline Dolehide were the defending champions but chose to participate with different partners. Arconada partnered Marta Kostyuk but lost in the first round to Francesca Di Lorenzo and Jamie Loeb. Dolehide partnered Caty McNally, but lost in the semifinals to Magdalena Fręch and Katarzyna Kawa.
Usue Maitane Arconada was the defending champion but chose not to participate.