The 2012 PTT Pattaya Open was a women's professional tennis tournament played on outdoor hard courts. It was the 21st edition of the PTT Pattaya Open and was part of the International category on the 2012 WTA Tour. It took place at the Dusit Thani Hotel in Pattaya, Thailand from February 5 through February 12, 2012. Daniela Hantuchová won the singles title.
Third-seeded Daniela Hantuchová won her second consecutive singles title at the event and earned $37,000 first-prize money.[1]
See main article: 2012 PTT Pattaya Open – Singles. 
Daniela Hantuchová defeated 
Maria Kirilenko, 6–7(4–7), 6–3, 6–3
See main article: 2012 PTT Pattaya Open – Doubles. 
Sania Mirza / 
Anastasia Rodionova defeated Chan Hao-ching / Chan Yung-jan, 3–6, 6–1, [10–8]
| Country | Player | Ranking1 | Seed | |
|---|---|---|---|---|
| Russian Federation | Vera Zvonareva | 8 | 1 | |
| Slovakia | Dominika Cibulková | 16 | 2 | |
| Slovakia | Daniela Hantuchová | 20 | 3 | |
| Russian Federation | Maria Kirilenko | 26 | 4 | |
 China | Zheng Jie | 35 | 5 | |
 Kazakhstan | Galina Voskoboeva | 46 | 6 | |
 Romania | Sorana Cîrstea | 54 | 7 | |
| Vania King | 59 | 8 |
The following players received wildcards into the main draw:
The following players received entry from the qualifying draw:
Laura Robson (lower back injury) Galina Voskoboeva (illness) Vera Zvonareva (left hip injury)| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| India | Sania Mirza | Australia | Anastasia Rodionova | 41 | 1 | |
| Eleni Daniilidou | Tamarine Tanasugarn | 135 | 2 | |||
 Uzbekistan | Akgul Amanmuradova | Kimiko Date-Krumm | 142 | 3 | ||
| Chan Hao-ching | Chan Yung-jan | 147 | 4 |
Anne Keothavong (illness)
Tamarine Tanasugarn (severe illness)