The Hua Hin Championships (also known as the WTA Thailand Open) was a women's tennis tournament on the WTA Tour played on outdoor hardcourts in Hua Hin, Thailand.

On debut in 2019, the event was sponsored by Toyota and was also known as the Toyota Thailand Open. Initially, the event was classified as a WTA International tournament, but has been a WTA 250 tournament as of the 2023 edition; the first to be played since the rebranding of WTA tournament categories in 2020.^[1] The tournament did not take place in 2021 and 2022 due to COVID-19 pandemic. It was replaced by the WTA Singapore Open in 2025.^[2]

A low-level men's and women's Challenger Tour event was previously held in the same location in 2015 and 2017 in November.

Year	Champion	Runner-up	Score
↓ International ↓
2019	Dayana Yastremska	Ajla Tomljanović	6–2, 2–6, 7–6(7–3)
2020	Magda Linette	Leonie Küng	6–3, 6–2
2021–22	Not held
↓ WTA 250 ↓
2023	Zhu Lin	Lesia Tsurenko	6–4, 6–4
2024 (1)	Diana Shnaider	Zhu Lin	6–3, 2–6, 6–1
2024 (2)	Rebecca Šramková	Laura Siegemund	6–4, 6–4

Year	Champions	Runners-up	Score
↓ International ↓
2019	Irina-Camelia Begu Monica Niculescu	Anna Blinkova Wang Yafan	2–6, 6–1, [12–10]
2020	Arina Rodionova Storm Sanders	Barbara Haas Ellen Perez	6–3, 6–3
2021–22	Not held
↓ WTA 250 ↓
2023	Chan Hao-ching Wu Fang-hsien	Wang Xinyu Zhu Lin	6–1, 7–6(8–6)
2024 (1)	Miyu Kato Aldila Sutjiadi	Guo Hanyu Jiang Xinyu	6–4, 1–6, [10–7]
2024 (2)	Anna Danilina Irina Khromacheva	Eudice Chong Moyuka Uchijima	6–4, 7–5

• WTA tournament profile
• Thailand Open | Overview | WTA Tour | Tennis
• Thailand Open 2 | Overview | WTA Tour | Tennis