Seiko Okamoto

(born 14 March 1978) is a Japanese former professional tennis player.

Okamoto took part in the 2006 Bangalore Open but lost in the first round of singles qualifying, and the first round of doubles, alongside Ryōko Fuda. She has stated that her favorite surface to play on is hardcourt.

In her career, Okamoto won one doubles title on the WTA Tour, as well as two singles and 15 doubles titles on the ITF Women's Circuit.

WTA career finals Doubles: 1 (1 title) ResultDateTournamentTierSurfacePartnerOpponentsScoreWin Jan 2004 Hobart International, Australia Tier V Hard Shinobu Asagoe Els Callens Barbara Schett 2–6, 6–4, 6–3

ITF Circuit finals $50,000 tournaments $25,000 tournaments $10,000 tournaments

Singles: 10 (2–8) Result No. Date Tournament Surface OpponentScoreWin 1. 20 November 2000 Kōfu Open, Japan Carpet Keiko Taguchi 4–1, 1–3, 4–1Loss 2. 22 July 2002 ITF Incheon, South Korea Hard Kim Mi-ok 6–4, 3–6, 4–6Loss 3. 19 October 2003 ITF Haibara, Japan Hard Yuka Yoshida 1–6, 4–6Loss 4. 13 May 2004 ITF Beijing, China Hard Li Na 4–6, 4–6Loss 5. 27 February 2005 ITF Taipei, Taiwan Hard Latisha Chan 3–6, 2–6Loss 6. 28 May 2005 ITF Nagano, Japan Carpet Mayumi Yamamoto 2–6, 2–6Loss 7. 5 June 2005 ITF Gunma, Japan Carpet Hsieh Su-wei 1–6, 2–6Loss 8. 29 October 2006 ITF Hamanako, Japan Carpet Shiho Hisamatsu 2–6, 4–6Win 9. 15 April 2007 ITF Ho Chi Minh City, Vietnam Hard Erika Takao 6–1, 6–2Loss 10. 21 October 2007 ITF Makinohara, Japan Carpet Akiko Yonemura 3–6, 4–6

Doubles: 33 (15–18) Result No. Date Tournament Surface Partner OpponentsScoreLoss 1. 23 November 1998 ITF Nagasaki, Japan Grass Keiko Taguchi Akiko Gunji Keiko Ishida 2–6, 2–6Win 2. 6 June 1999 ITF Little Rock, United States Hard Keiko Taguchi Chang Kyung-mi Chae Kyung-yee 7–5, 6–2Win 3. 28 November 1999 ITF Kōfu, Japan Carpet Keiko Taguchi Remi Tezuka Maki Arai 7–6, 0–6, 7–5Win 4. 13 November 2000 ITF Haibara, Japan Clay Keiko Taguchi Akiko Gunji Keiko Ishida 2–4, 4–0, 5–3, 3–5, 4–2Win 5. 20 November 2000 ITF Kōfu, Japan Carpet Keiko Taguchi Kumiko Iijima Maki Arai 3–5, 4–1, 5–4, 4–1Win 6. 3 September 2001 ITF Kugayama, Japan Hard Nami Urabe Melissa Dowse Samantha Stosur 6–4, 2–6, 6–1Loss 7. 26 September 2001 ITF Kyoto, Japan Hard Nami Urabe Melissa Dowse Samantha Stosur 3–6, 6–3, 2–6Loss 8. 10 February 2002 ITF Faro, Portugal Hard Satomi Kinjo Remi Tezuka Maki Arai 5–7, 7–6, 2–6Win 9. 30 June 2002 ITF Lachine, Canada Hard Shizu Katsumi Adria Engel Kristina Kraszewski w/oWin 10. 21 July 2002 ITF Seoul, South Korea Hard Maki Arai Chang Kyung-mi Chae Kyung-yee 6–3, 5–7, 6–4Loss 11. 20 April 2003 ITF Ho Chi Minh City, Vietnam Hard Shiho Hisamatsu Choi Jin-young Kim Mi-ok 1–6, 2–6Win 12. 1 June 2003 ITF Houston, United States Hard (i) Remi Tezuka Yvonne Doyle Nicole Rencken 5–7, 6–4, 6–3Loss 13. 2 November 2003 ITF Beijing, China Hard Jeon Mi-ra Yang Shujing Yu Ying 4–6, 2–6Loss 14. 10 May 2004 ITF Karuizawa, Japan Carpet Ryōko Fuda Rika Fujiwara Jeon Mi-ra 2–6, 6–2, 6–7Win 15. 11 July 2004 ITF College Park, United States Hard Shiho Hisamatsu Natallia Dziamidzenka Kaysie Smashey 7–6(5), 6–2Loss 16. 21 February 2005 ITF Taipei, Taiwan Hard Ryōko Fuda Chuang Chia-jung Hsieh Su-wei 3–6, 2–6Win 17. 1 May 2005 ITF Hamanako, Japan Hard Ryōko Fuda Shiho Hisamatsu Ayami Takase 7–5, 6–4Loss 18. 8 May 2005 Kangaroo Cup, Japan Carpet Ryōko Fuda Rika Fujiwara Saori Obata 1–6, 2–6Win 19. 14 May 2005 Fukuoka International, Japan Carpet Ryōko Fuda Latisha Chan Chuang Chia-jung 6–2, 7–6Win 20. 22 May 2005 ITF Changwon, South Korea Hard Chuang Chia-jung Chan Chin-wei Hsieh Su-wei 6–2, 7–5Loss 21. 23 October 2005 ITF Makinohara, Japan Carpet Ayami Takase Ryoko Takemura Tomoko Yonemura 4–6, 3–6Loss 22. 6 November 2005 ITF Busan, Korea Hard Ayami Takase Julia Efremova Wynne Prakusya 4–6, 7–6(6), 1–6Loss 23. 11 April 2006 ITF Jackson, United States Clay Ayami Takase Maria Kondratieva Sophie Lefèvre 0–6, 3–6Loss 24. 9 July 2006 ITF Nagoya, Japan Hard Ayami Takase Chuang Chia-jung Shiho Hisamatsu 2–6, 3–6Loss 25. 16 July 2006 ITF Miyazaki, Japan Hard Ayami Takase Maki Arai Kumiko Iijima 2–6, 3–6Loss 26. 23 July 2006 Kurume Cup, Japan Carpet Ayami Takase Latisha Chan Chuang Chia-jung w/oLoss 27. 28 October 2006 ITF Hamanako, Japan Carpet Maki Arai Chuang Chia-jung Hsieh Su-wei 6–7(2), 5–7Win 28. 5 November 2006 ITF Sutama, Japan Clay Maki Arai Ryoko Takemura Mari Tanaka 6–2, 6–3Win 29. 19 February 2007 ITF Clearwater, United States Hard Ryōko Fuda Mervana Jugić-Salkić Antonella Serra Zanetti 5–7, 6–3, 6–4Loss 30. 9 April 2007 ITF Ho Chi Minh City, Vietnam Hard Kumiko Iijima Han Xinyun Hao Jie 2–6, 6–1, 3–6Loss 31. 6 May 2007 ITF Gifu, Japan Carpet Kumiko Iijima Ayumi Morita Ai Sugiyama 1–6, 6–3, 0–6Loss 32. 18 February 2008 ITF Clearwater, United States Hard Chan Chin-wei Anna Fitzpatrick Ana Veselinović 2–6, 6–3, [6–10]Win 33. 26 March 2010 ITF Kōfu, Japan Hard Maki Arai Shiho Hisamatsu Maiko Inoue 6–4, 6–4