The 2019 Thailand Open, sponsored by Toyota, was a tennis tournament played on outdoor hard courts. It was the 1st edition of the Hua Hin Championships as part of the WTA International tournaments of the 2019 WTA Tour. It took place at the True Arena Hua Hin in Hua Hin, Thailand, from 28 January 2019 to 3 February 2019.[1]
This tournament replaced the Taiwan Open on the WTA Tour.
| Event | W | F | SF | QF | Round of 16 | Round of 32 | width=85 | Q | width=85 | Q2 | width=85 | Q1 |
| Singles | 280 | 180 | 110 | 60 | 30 | 1 | 18 | 12 | 1 | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubles | 1 |
| width=130 bgcolor=dfe2e9 | Event | width=80 bgcolor=lime | W | width=85 bgcolor=thistle | F | width=85 bgcolor=ffff00 | SF | width=85 bgcolor=ffebcd | QF | width=85 bgcolor=afeeee | Round of 16 | width=85 bgcolor=afeeee | Round of 32 | width=85 | Q2 | width=85 | Q1 |
| style=background:#ededed | Women's singles | $43,000 | $21,400 | $11,500 | $6,175 | $3,400 | $2,100 | $1,020 | $600 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| style=background:#ededed | Women's doubles | $12,300 | $6,400 | $3,435 | $1,820 | $960 |
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Garbiñe Muguruza | 18 | 1 | ||
 France | Caroline Garcia | 19 | 2 | |
| Hsieh Su-wei | 27 | 3 | ||
 China | Zheng Saisai | 40 | 4 | |
| China | Zhang Shuai | 42 | 5 | |
 Australia | Ajla Tomljanović | 47 | 6 | |
| France | Pauline Parmentier | 55 | 7 | |
 Ukraine | Dayana Yastremska | 57 | 8 |
The following players received wildcards into the singles main draw:
Caroline Garcia Peng ShuaiThe following players received entry from the qualifying draw:
Mihaela Buzărnescu → replaced by 
Anna Blinkova
Zarina Diyas → replaced by Kateryna Kozlova
Bethanie Mattek-Sands → replaced by Monica Niculescu Wang Qiang → replaced by 
Mandy Minella
Tímea Babos (dizziness) Zhang Shuai (illness)| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
 Japan | Miyu Kato | Japan | Makoto Ninomiya | 67 | 1 | |
| Romania | Irina-Camelia Begu | Romania | Monica Niculescu | 67 | 2 | |
| China | Peng Shuai | China | Yang Zhaoxuan | 77 | 3 | |
| United States | Kaitlyn Christian | China | Duan Yingying | 112 | 4 |
The following pairs received wildcards into the doubles main draw:
See main article: 2019 Thailand Open – Singles.
Dayana Yastremska def. Ajla Tomljanović, 6–2, 2–6, 7–6(7–3).See main article: 2019 Thailand Open – Doubles.
Irina-Camelia Begu / Monica Niculescu def. Anna Blinkova / Wang Yafan, 2–6, 6–1, [12–10].