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The Thailand Open (also known as PTT Pattaya Open) was a women's tennis tournament held in Pattaya, Thailand. Held since 1991, this WTA Tour event was classified as an International tournament and was played on hardcourts.

The event was part of the Tier V series from 1991 to 1992 and then again from 2001 to 2003. It was a Tier IV event from 1993 to 2000 and was promoted back to Tier IV in 2005, after a year's hiatus. Starting in 2009, the tournament became an International Series event. The 2015 PTT Thailand Open was the last edition.

Daniela Hantuchová holds the record for the most singles titles won with three: 2011, a successful title defence in 2012, and 2015.

Year	Champion	Runner-up	Score
1991	Yayuk Basuki	Naoko Sawamatsu	6–2, 6–2
1992	Sabine Appelmans	Andrea Strnadová	7–5, 3–6, 7–5
1993	Yayuk Basuki (2)	Marianne Werdel	6–3, 6–1
1994	Sabine Appelmans (2)	Patty Fendick	6–7(5–7), 7–6(7–5), 6–2
1995	Barbara Paulus	Yi Jingqian	6–4, 6–3
1996	Ruxandra Dragomir	Tamarine Tanasugarn	7-6(7–4), 6-4
1997	Henrieta Nagyová	Dominique van Roost	7–5, 6–7(6–8), 7–5
1998	Julie Halard-Decugis	Li Fang	6–1, 6–2
1999	Magdalena Maleeva	Anne Kremer	4–6, 6–1, 6–2
2000	Anne Kremer	Tatiana Panova	6–1, 6–4
2001	Patty Schnyder	Henrieta Nagyová	6–0, 6–4
2002	Angelique Widjaja	Cho Yoon-jeong	6–2, 6–4
2003	Henrieta Nagyová (2)	Ľubomíra Kurhajcová	6–4, 6–2
2005	Conchita Martínez	Anna-Lena Grönefeld	6–3, 3–6, 6–3
2006	Shahar Pe'er	Jelena Kostanić Tošić	6–3, 6–1
2007	Sybille Bammer	Gisela Dulko	7–5, 3–6, 7–5
2008	Agnieszka Radwańska	Jill Craybas	6–2, 1–6, 7–6(7–4)
2009	Vera Zvonareva	Sania Mirza	7–5, 6–1
2010	Vera Zvonareva (2)	Tamarine Tanasugarn	6–4, 6–4
2011	Daniela Hantuchová	Sara Errani	6–0, 6–2
2012	Daniela Hantuchová (2)	Maria Kirilenko	6–7(4–7), 6–3, 6–3
2013	Maria Kirilenko	Sabine Lisicki	5–7, 6–1, 7–6(7–1)
2014	Ekaterina Makarova	Karolína Plíšková	6–3, 7–6(9–7)
2015	Daniela Hantuchová (3)	Ajla Tomljanović	3–6, 6–3, 6–4

Year	Champions	Runners-up	Score
1991	Nana Miyagi Suzanna Wibowo	Rika Hiraki Akemi Nishiya	6–1, 6–4
1992	Isabelle Demongeot Natalia Medvedeva	Pascale Paradis-Mangon Sandrine Testud	6–1, 6–1
1993	Cammy MacGregor Catherine Suire	Patty Fendick Meredith McGrath	6–3, 7–6(7–3)
1994	Patty Fendick Meredith McGrath	Yayuk Basuki Nana Miyagi	7–6(7–0), 3–6, 6–3
1995	Jill Hetherington Kristine Kunce	Kristin Godridge Nana Miyagi	2–6, 6–4, 6–3
1996	Miho Saeki Yuka Yoshida	Tina Križan Nana Miyagi	6–2, 6–3
1997	Kristine Kunce (2) Corina Morariu	Florencia Labat Dominique van Roost	6–3, 6–4
1998	Julie Halard-Decugis Els Callens	Rika Hiraki Aleksandra Olsza	3–6, 6–2, 6–2
1999	Åsa Svensson Émilie Loit	Evgenia Koulikovskaya Patricia Wartusch	6–1, 6–4
2000	Yayuk Basuki Caroline Vis	Tina Križan Katarina Srebotnik	6–3, 6–3
2001	Åsa Carlsson (2) Iroda Tulyaganova	Liezel Huber Wynne Prakusya	4–6, 6–3, 6–3
2002	Kelly Liggan Renata Voráčová	Lina Krasnoroutskaya Tatiana Panova	7–5, 7–6(9–7)
2003	Li Ting Sun Tiantian	Wynne Prakusya Angelique Widjaja	6–4, 6–3
2005	Marion Bartoli Anna-Lena Grönefeld	Marta Domachowska Silvija Talaja	6–3, 6–2
2006	Li Ting (2) Sun Tiantian (2)	Yan Zi Zheng Jie	3–6, 6–1, 7–6(7–5)
2007	Nicole Pratt Mara Santangelo	Chan Yung-jan Chuang Chia-jung	6–4, 7–6(7–4)
2008	Chan Yung-jan Chuang Chia-jung	Hsieh Su-wei Vania King	6–4, 6–3
2009	Yaroslava Shvedova Tamarine Tanasugarn	Yulia Beygelzimer Vitalia Diatchenko	6–3, 6–2
2010	Marina Erakovic Tamarine Tanasugarn (2)	Anna Chakvetadze Ksenia Pervak	7–5, 6–1
2011	Sara Errani Roberta Vinci	Sun Shengnan Zheng Jie	3–6, 6–3, [10–5]
2012	Sania Mirza Anastasia Rodionova	Chan Hao-ching Chan Yung-jan	3–6, 6–1, [10–8]
2013	Kimiko Date-Krumm Casey Dellacqua	Akgul Amanmuradova Alexandra Panova	6–3, 6–2
2014	Peng Shuai Zhang Shuai	Alla Kudryavtseva Anastasia Rodionova	3–6, 7–6(7–5), [10–6]
2015	Chan Hao-ching Chan Yung-jan (2)	Shuko Aoyama Tamarine Tanasugarn	2–6, 6–4, [10–3]

• Thailand Open (ATP) – men's tournament
• List of tennis tournaments

• Official website