| Thassha Vitayaviroj | |
| Birth Date: | 1986 6, df=y |
| Birth Place: | Ubon Ratchathani, Thailand |
| Turnedpro: | 2001 |
| Retired: | 2007 |
| Plays: | Right-handed (two-handed backhand) |
| Careerprizemoney: | $24,399 |
| Singlesrecord: | 73–83 |
| Highestsinglesranking: | No. 439 (2 May 2005) |
| Doublesrecord: | 78–72 |
| Doublestitles: | 5 ITF |
| Highestdoublesranking: | No. 320 (24 April 2006) |
Thassha Vitayaviroj (Thai: ธัชชา วิทยวิโรจน์; 10 June 1986) is a former professional Thai tennis player.[1]
Vitayaviroj has career-high WTA rankings of 439 in singles, achieved on 2 May 2005, and 320 in doubles, set on 24 April 2006. She won five doubles titles on the ITF Women's Circuit. Her only WTA Tour main-draw appearance came at the 2002 Volvo Women's Open, where she partnered with Montinee Tangphong in the doubles event.[2]
Playing for Thailand Fed Cup team, Vitayaviroj has a win–loss record of 0–1.[3]
| $10,000 tournaments |
| Result | No. | Date | Tournament | Surface | Partner | Opponents | Score | |
|---|---|---|---|---|---|---|---|---|
| Win | 1. | 9 November 2003 | Pune, India | Hard |  Montinee Tangphong |  Geeta Manohar Archana Venkataraman | 4–6, 7–5, 6–4 | |
| Win | 2. | 19 January 2004 | New Delhi, India | Hard | Montinee Tangphong |  Satomi Kinjo Tomoyo Takagishi | 3–6, 6–0, 6–3 | |
| Loss | 1. | 9 May 2004 | Jakarta, Indonesia | Hard | Liza Andriyani | Septi Mende Wukirasih Sawondari | 4–6, 3–6 | |
| Loss | 2. | 30 August 2004 | New Delhi, India | Hard | Montinee Tangphong | Rushmi Chakravarthi Sai Jayalakshmy Jayaram | w/o | |
| Loss | 3. | 26 September 2004 | Jakarta, Indonesia | Hard | Liza Andriyani | 3–6, 4–6 | ||
| Loss | 4. | 24 October 2004 | Pune, India | Hard |  Akgul Amanmuradova Sai Jayalakshmy Jayaram | 3–6, 6–4, 3–6 | ||
| Win | 3. | 30 October 2005 | Mumbai, India | Hard | Wilawan Choptang |  Nicole Clerico Ksenia Palkina | 5–7, 7–5, 6–3 | |
| Winner | 4. | 1 April 2006 | Mumbai, India | Hard | Nudnida Luangnam |  Natasha Khan Claire Peterzan | 3–3 ret. | |
| Runner-up | 5. | 8 April 2006 | Chennai, India | Clay | Nudnida Luangnam |  Cho Jeong-a Kim Ji-young | 4–6, 4–6 | |
| Runner-up | 6. | 30 July 2006 | Bangkok, Thailand | Hard | Wilawan Choptang | Ayu Fani Damayanti Nudnida Luangnam | 2–6, 2–6 | |
| Win | 5. | 12 November 2006 | Manila, Philippines | Hard | Kao Shao-yuan | Kim Jung-eun Lim Sae-mi | 6–2, 7–5 | |
| Loss | 7. | 19 November 2006 | Manila, Philippines | Hard | Kao Shao-yuan | Noppawan Lertcheewakarn Varatchaya Wongteanchai | 6–3, 3–6, 6–7(2) |