Ayumi Oka

Country (sports)	Japan
Born	(1986-03-13) 13 March 1986 (age 37) Hyogo, Japan[1]
Plays	Right (two-handed backhand)
Prize money	$89,103
Singles
Career record	154–144 (51.7%)
Career titles	2 ITF
Highest ranking	No. 297 (15 June 2009)
Doubles
Career record	148–114 (56.5%)
Career titles	13 ITF
Highest ranking	No. 219 (7 July 2010)

Ayumi Oka (岡あゆみ, Oka Ayumi, born 13 March 1986) is a Japanese former professional tennis player. Most time of her career, she played on the ITF Women's Circuit.

In June 2009, she reached her highest singles ranking of 297 by the Women's Tennis Association (WTA). In July 2010, she reached her best WTA doubles ranking of 219.

ITF Circuit finals

Singles (2–0)

Outcome	No.	Date	Tournament	Surface	Opponent	Score
Winner	1.	9 September 2007	ITF Kyoto, Japan	Carpet (i)	Haruka Fujishiro	6–1, 4–6, 6–3
Winner	2.	22 August 2011	ITF Saitama, Japan	Hard	Duan Yingying	6–3, 6–4

Doubles (13–10)

Outcome	No.	Date	Tournament	Surface	Partner	Opponents	Score
Winner	1.	12 June 2005	ITF Tokyo, Japan	Hard	Natsuko Kurita	Nozomi Aiba Kana Okawa	6–3, 6–4
Winner	2.	4 June 2007	ITF Tokyo, Japan	Hard	Mari Tanaka	Tomoko Taira Etsuko Kitazaki	3–6, 6–1, 6–4
Winner	3.	22 July 2007	Kurume Cup, Japan	Grass	Tomoko Sugano	Liu Wanting Song Shanshan	6–4, 6–1
Winner	4.	22 September 2007	Tsukuba, Japan	Hard	Tomoko Sugano	Natsumi Hamamura Ayaka Maekawa	6–2, 6–3
Runner-up	5.	19 November 2007	Manila, Philippines	Hard	Kei Sekine	Chen Yi Kao Shao-yuan	6–7(5–7), 1–6
Runner-up	6.	3 May 2008	Balikpapan, Indonesia	Hard	Tomoko Sugano	Sandy Gumulya Lavinia Tananta	3–6, 6–4, [7–10]
Winner	7.	22 June 2008	Sutama, Japan	Clay	Ayaka Maekawa	Kazusa Ito Tomoko Taira	6–3, 6–4
Runner-up	8.	13 July 2008	Tokyo, Japan	Carpet	Varatchaya Wongteanchai	Chang Kyung-mi Chae Kyung-yee	6–3, 2–6, [7–10]
Winner	9.	20 September 2008	Kyoto, Japan	Carpet (i)	Varatchaya Wongteanchai	Maki Arai Yurina Koshino	5–7, 6–2, [10–2]
Runner-up	10.	1 June 2009	Komoro, Japan	Clay	Varatchaya Wongteanchai	Zhang Shuai Xu Yifan	2–6, 1–6
Winner	11.	8 June 2009	Tokyo, Japan	Hard	Mari Tanaka	Maki Arai Yurina Koshino	7–6, 6–0
Winner	12.	2 August 2009	Obihiro, Japan	Carpet	Natsumi Hamamura	Rika Fujiwara Kurumi Nara	3–6, 6–1, [10–5]
Winner	13.	23 May 2010	Karuizawa, Japan	Carpet	Akiko Yonemura	Sun Shengnan Xu Yifan	7–6 (7–1), 6–3
Runner-up	14.	2 August 2010	Niigata, Japan	Carpet	Miki Miyamura	Akari Inoue Kotomi Takahata	1–6, 4–6
Runner-up	15.	19 September 2010	Kyoto, Japan	Carpet (i)	Kaori Onishi	Kazusa Ito Tomoko Taira	3–6, 6–7(5–7)
Winner	16.	20 March 2011	Miyazaki, Japan	Carpet	Mari Inoue	Chinami Ogi Yuuki Tanaka	5–7, 6–2, [10–8]
Winner	17.	15 May 2011	Kurume Cup, Japan	Grass	Akiko Yonemura	Rika Fujiwara Tamarine Tanasugarn	6–3, 5–7, [10–8]
Runner-up	18.	22 May 2011	Karuizawa, Japan	Carpet (i)	Natsumi Hamamura	Rika Fujiwara Shuko Aoyama	4–6, 4–6
Runner-up	19.	14 May 2011	Niigata, Japan	Hard	Akari Inoue	Natsumi Hamamura Erika Sema	1–6, 2–6
Runner-up	20.	22 August 2011	Saitama, Japan	Hard	Akari Inoue	Liu Wanting Liang Chen	3–6, 7–5, [9–11]
Runner-up	21.	11 September 2011	Nato, Japan	Carpet	Natsumi Hamamura	Kanae Hisami Varatchaya Wongteanchai	6–1, 6–7(4–7), [12–14]
Winner	22.	30 October 2011	Hamanako, Japan	Carpet	Natsumi Hamamura	Huỳnh Phương Đài Trang Varatchaya Wongteanchai	6–3, 6–3
Winner	23.	23 March 2012	ITF Kofu, Japan	Hard	Kotomi Takahata	Eri Hozumi Remi Tezuka	6–4, 5–7, [10–3]