Jelena Kostanić Tošić
Jelena Kostanić Tošić is a retired tennis player from Croatia.
On July 26, 2004 she reached her career-high singles ranking of world No. 32. On October 4, 2004 she reached her highest doubles ranking of No. 30. Kostanić Tošić won eight doubles titles on the WTA Tour and four singles and ten doubles titles on the ITF Women's Circuit. As a junior, she won the 1998 Australian Open.
Kostanić Tošić married Croatian table tennis player Roko Tošić on July 8, 2006.
At the 2008 Australian Open, Tošić was defeated in the first round by the eventual champion Maria Sharapova in straight sets.
Playing for Croatia at the Fed Cup, Kostanić Tošić has a win–loss 19–20.
Her last professional tournament was the 2010 US Open.
Personal
Jelena started playing tennis at age 7. She was eventually coached by Alan Maric; off-court trainer was Slaven Hrvoj. Father Slobodan is an external bank auditor; mother Smiljana is a dental nurse; sister Marina is a student of economics. Entire family plays recreational tennis on private court.WTA Tour finals
Singles : 3 (0-3)
| Outcome | No. | Date | Tournament | Surface | Opponent in the final | Score |
| Runner-up | 1. | August 10, 2003 | Nordea Nordic Light Open, Helsinki, Finland | Clay |  Anna Smashnova | 6–4, 4–6, 0–6 |
| Runner-up | 2. | February 12, 2006 | Pattaya Women's Open, Thailand | Hard | Shahar Pe'er | 3–6, 1–6 |
| Runner-up | 3. | February 19, 2006 | Bangalore Open, India | Hard |  Mara Santangelo | 6–3, 6–7, 3–6 |
Doubles: 16 (8-8)
| Outcome | No. | Date | Tournament | Surface | Partner | Opponents in the final | Score |
| Winner | 1. | 26 April 1999 | Bol Ladies Open, Croatia | Clay | Michaela Paštiková | Meghann Shaughnessy Andreea Vanc | 7–5, 6–7, 6–2 |
| Winner | 2. | 8 November 1999 | Wismilak International, Kuala Lumpur, Malaysia | Hard | Tina Pisnik | Rika Hiraki Yuka Yoshida | 3–6, 6–2, 6–4 |
| Runner-up | 1. | 23 April 2000 | Budapest Grand Prix, Hungary | Clay |  Sandra Načuk |  Lubomira Bacheva Cristina Torrens Valero | 0–6, 2–6 |
| Winner | 3. | 6 May 2002 | J&S Cup, Warsaw, Poland | Clay | Henrieta Nagyová | Evgenia Kulikovskaya Silvija Talaja | 6–1, 6–1 |
| Winner | 4. | 20 May 2002 | Internationaux de Strasbourg, France | Clay | Jennifer Hopkins | Caroline Dhenin Maja Matevžič | 0–6, 6–4, 6–4 |
| Runner-up | 2. | 19 May 2003 | Internationaux de Strasbourg, France | Clay |  Laura Granville |  Sonya Jeyaseelan Maja Matevžič | 4–6, 4–6 |
| Winner | 5. | 5 January 2004 | Auckland Open, New Zealand | Hard | Mervana Jugić-Salkić | Virginia Ruano Pascual Paola Suárez | 7–6, 3–6, 6–1 |
| Winner | 6. | 12 January 2004 | Canberra International, Australia | Hard | Claudine Schaul | Caroline Dhenin Lisa McShea | 6–4, 7–6 |
| Runner-up | 3. | 19 June 2004 | Rosmalen Championships,'s-Hertogenbosch, Netherlands | Grass |  Claudine Schaul |  Lisa McShea Milagros Sequera | 6–7, 3–6 |
| Runner-up | 4. | 15 May 2005 | Prague Open, Czech Republic | Clay |  Barbora Záhlavová-Strýcová | Nicole Pratt  Émilie Loit | 7–6, 4–6, 4–6 |
| Runner-up | 5. | 25 September 2005 | Slovenia Open, Portorož | Hard |  Katarina Srebotnik | Anabel Medina Garrigues Roberta Vinci | 4–6, 7–5, 2–6 |
| Runner-up | 6. | 9 January 2006 | Hobart International, Australia | Hard | Jill Craybas | Émilie Loit Nicole Pratt | 2–6, 1–6 |
| Runner-up | 7. | 1 October 2006 | Guangzhou International Women's Open, China | Hard | Vania King |  Li Ting Sun Tiantian | 4–6, 6–2, 5–7 |
| Winner | 7. | 8 October 2006 | Japan Open, Tokyo | Hard | Vania King | Chan Yung-jan Chuang Chia-jung | 7–6, 5–7, 6–2 |
| Winner | 8. | 15 October 2006 | Bangkok Open, Thailand | Hard | Vania King | Mariana Díaz Oliva Natalie Grandin | 7–5, 2–6, 7–5 |
| Runner-up | 8. | 23 February 2008 | Copa Colsanitas, Bogotá, Colombia | Clay |  Martina Müller | Iveta Benešová Bethanie Mattek-Sands | 3–6, 3–6 |
ITF finals
Singles (4-6)
| Outcome | No. | Date | Tournament | Surface | Opponent in the final | Score |
| Runner-up | 1. | 29 September 1997 | Zadar, Croatia | Clay | Katarina Srebotnik | 6–4, 4–6, 4–6 |
| Runner-up | 2. | 5 April 1998 | Hvar, Croatia | Clay |  Nadia Petrova | 2–6, 2–6 |
| Winner | 1. | 20 September 1998 | Otočec, Slovenia | Clay | Anca Barna | 6–4, 7–6 |
| Winner | 2. | 28 February 1999 | Bushey, United Kingdom | Carpet |  Lorna Woodroffe | 7–6, 6–3 |
| Winner | 3. | 24 May 1999 | Warsaw, Poland | Clay | Libuše Průšová | 4–6, 6–3, 6–2 |
| Winner | 4. | 1 July 2001 | Fontanafredda, Italy | Clay |  Bahia Mouhtassine | 6–4, 6–3 |
| Runner-up | 3. | 16 October 2005 | Joué-lès-Tours, France | Hard | Émilie Loit | 2–6, 1–6 |
| Runner-up | 4. | 20 April 2008 | Saint-Malo, France | Clay | Stéphanie Cohen-Aloro | 2–6, 5–7 |
| Runner-up | 5. | 15 June 2008 | Zlín, Czech Republic | Clay | Anna-Lena Grönefeld | 3–6, 6–4, 1–6 |
| Runner-up | 6. | 20 July 2008 | Biella, Italy | Clay | Mara Santangelo | 3–6, 1–6 |