Momoko Kobori (小堀 桃子, Kobori Momoko, born 22 August 1998) is a Japanese female tennis player.^[1] She has career-high WTA rankings of world No. 226 in singles, achieved in April 2019, and No. 136 in doubles, set in November 2018. She has won two singles titles and 18 doubles titles on the ITF Circuit.

Kobori made her WTA Tour main-draw debut at the 2017 Japan Women's Open, after receiving a wildcard alongside Erina Hayashi into the doubles tournament.

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Loss	0–1	Oct 2017	ITF Makinohara, Japan	25,000	Carpet	Ayano Shimizu	3–6, 3–6
Win	1–1	May 2018	ITF Karuizawa, Japan	25,000	Carpet	Miyabi Inoue	6–0, 6–2
Win	2–1	Oct 2018	ITF Makinohara, Japan	25,000	Carpet	Junri Namigata	6–2, 6–3
Loss	2–2	May 2019	ITF Karuizawa, Japan	W25	Carpet	Jovana Jakšić	1–6, 6–4, 5–7
Loss	2–3	Mar 2021	ITF Sharm El Sheikh, Egypt	W15	Hard	Yuriko Miyazaki	2–6, 6–4, 3–6
Loss	2–4	Oct 2022	ITF Nanao, Japan	W25	Carpet	Haruka Kaji	6–3, 3–6, 3–6
Win	3–4	Sep 2024	ITF Kyoto, Japan	W35	Hard (i)	Tiphanie Lemaître	7–6(1), 6–2

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Loss	0–1	Mar 2016	ITF Nishitama, Japan	10,000	Hard	Chihiro Muramatsu	Robu Kajitani Mihoki Miyahara	6–4, 2–6, [6–10]
Win	1–1	Mar 2017	ITF Nishitama, Japan	15,000	Hard	Kotomi Takahata	Shiho Akita Erika Sema	6–1, 6–2
Loss	1–2	Jun 2017	ITF Tokyo, Japan	25,000	Hard	Kotomi Takahata	Rika Fujiwara Kyōka Okamura	2–6, 0–6
Win	2–2	Jun 2017	Open de Montpellier, France	25,000	Clay	Ayano Shimizu	Laura Pigossi Victoria Rodríguez	6–3, 4–6, [10–7]
Win	3–2	Jul 2017	Open Denain, France	25,000	Clay	Ayano Shimizu	Mathilde Armitano Elixane Lechemia	6–4, 6–3
Win	4–2	Oct 2017	ITF Toowoomba, Australia	25,000	Hard	Ayano Shimizu	Naiktha Bains Abigail Tere-Apisah	7–5, 7–5
Loss	4–3	Feb 2018	Burnie International, Australia	60,000	Hard	Chihiro Muramatsu	Vania King Laura Robson	6–7(3), 1–6
Loss	4–4	Mar 2018	ITF Yokohama, Japan	25,000	Hard	Chihiro Muramatsu	Laura Robson Fanny Stollár	7–5, 2–6, [4–10]
Loss	4–5	Mar 2018	Kōfu International Open, Japan	25,000	Hard	Erina Hayashi	Gao Xinyu Luksika Kumkhum	0–6, 6–2, [4–10]
Win	5–5	May 2018	ITF Karuizawa, Japan	25,000	Carpet	Ayano Shimizu	Chisa Hosonuma Kanako Morisaki	6–0, 6–3
Win	6–5	Jul 2018	Open Denain, France	25,000	Clay	Ayano Shimizu	Quirine Lemoine Eva Wacanno	0–6, 7–5, [10–7]
Loss	6–6	Sep 2018	ITF Nanao, Japan	25,000	Carpet	Ayano Shimizu	Meguni Nishimoto Kanako Morisaki	2–6, 3–6
Loss	6–7	Oct 2018	ITF Hamamatsu, Japan	25,000	Carpet	Ayano Shimizu	Erina Hayashi Miharu Imanishi	5–7, 4–6
Loss	6–8	May 2019	ITF Karuizawa, Japan	W25	Carpet	Erina Hayashi	Ayaka Okuno Naomi Broady	3–6, 6–2, [7–10]
Loss	6–9	Jun 2019	ITF Hong Kong, China SAR	W25	Hard	Erina Hayashi	Junri Namigata Abigail Tere-Apisah	3–6, 6–2, [6–10]
Loss	6–10	Jul 2019	ITF Saskatoon, Canada	W25	Hard	Haruka Kaji	Hsu Chieh-yu Marcela Zacarías	3–6, 2–6
Loss	6–11	Oct 2019	ITF Makinohara, Japan	W25	Carpet	Erina Hayashi	Eudice Chong Aldila Sutjiadi	7–6(5), 6–7(5), [4–10]
Loss	6–12	Jan 2020	ITF Hong Kong	W25	Hard	Mei Yamaguchi	Mana Ayukawa Eudice Chong	4–6, 3–6
Win	7–12	Mar 2021	ITF Sharm El Sheikh, Egypt	W15	Hard	Ayano Shimizu	Barbora Matúšová Anastasia Zolotareva	6–1, 6–2
Win	8–12	Mar 2021	ITF Sharm El Sheikh, Egypt	W15	Hard	Ayano Shimizu	Alicia Barnett Yuriko Miyazaki	6–4, 6–1
Win	9–12	Jun 2021	ITF Lisbon, Portugal	W25	Hard	Han Na-lae	Ingrid Martins Ma Shuyue	6–3, 6–1
Win	10–12	Sep 2021	Portugal Ladies Open	W60+H	Hard	Hiroko Kuwata	Alicia Barnett Olivia Nicholls	7–6(5), 7–6(2)
Loss	10–13	Apr 2022	ITF Chiang Rai, Thailand	W25	Hard	Luksika Kumkhum	Gozal Ainitdinova Maria Timofeeva	6–2, 5–6, [4–10]
Win	11–13	Jun 2022	ITF Chiang Rai, Thailand	W25	Hard	Luksika Kumkhum	Misaki Matsuda Naho Sato	6–3, 6–3
Loss	11–14	Jun 2022	ITF Gurugram, India	W25	Hard	Misaki Matsuda	Saki Imamura Priska Madelyn Nugroho	4–6, 5–7
Loss	11–15	Jul 2022	ITF Gurugram, India	W25	Hard	Misaki Matsuda	Ankita Raina Priska Madelyn Nugroho	6–3, 0–6, [6–10]
Win	12–15	Jul 2022	ITF Nur-Sultan, Kazakhstan	W25	Hard	Ankita Raina	Choi Ji-hee Han Na-lae	6–2, 3–6, [10–8]
Loss	12–16	Jul 2022	President's Cup, Kazakhstan	W60	Hard	Moyuka Uchijima	Mariia Tkacheva Anastasia Zolotareva	6–4, 1–6, [6–10]
Win	13–16	Sep 2022	ITF Darwin, Australia	W25	Hard	Luksika Kumkhum	Yui Chikaraishi Nanari Katsumi	6–2, 7–6(3)
Win	14–16	Oct 2022	ITF Makinohara, Japan	W25	Carpet	Mayuka Aikawa	Mana Ayukawa Riko Sawayanagi	6–4, 5–7, [10–7]
Loss	14–17	Dec 2022	Indoor Championships, Japan	W60	Hard (i)	Luksika Kumkhum	Liang En-shuo Wu Fang-hsien	6–2, 6–7(5), [2–10]
Win	15–17	May 2023	ITF Karuizawa, Japan	W25	Grass	Ayano Shimizu	Talia Gibson Akari Inoue	3–6, 7–6(6), [10–5]
Loss	15–18	Jul 2023	ITF Hong Kong	W25	Hard	Ayano Shimizu	Erika Sema Aoi Ito	7–5, 3–6, [4–10]
Win	16–18	Aug 2023	ITF Hong Kong	W40	Hard	Ayano Shimizu	Erika Sema Aoi Ito	3–6, 6–3, [11–9]
Loss	16–19	Nov 2023	Takasaki Open, Japan	W100	Hard	Ayano Shimizu	Guo Hanyu Jiang Xinyu	6–7(5), 7–5, [5–10]
Loss	16–20	May 2024	Kurume Cup, Japan	W75	Carpet	Ayano Shimizu	Madeleine Brooks Sarah Beth Grey	4–6, 0–6
Win	17–20	Aug 2024	ITF Nakhon Si Thammarat, Thailand	W15	Hard	Natsumi Kawaguchi	Honoka Kobayashi Yukina Saigo	6–3, 6–4
Loss	17–21	Aug 2024	ITF Nakhon Si Thammarat, Thailand	W35	Hard	Natsumi Kawaguchi	Kanako Morisaki Hikaru Sato	2–6, 3–6
Loss	17–22	Sep 2024	ITF Nanao, Japan	W50	Carpet	Ayano Shimizu	Aoi Ito Naho Sato	1–6, 3–6
Loss	17–23	Nov 2024	ITF Hamamatsu, Japan	W35	Carpet	Ayano Shimizu	Hiromi Abe Akiko Omae	0–6, 0–6
Win	18–23	Nov 2024	Takasaki Open, Japan	W100	Hard	Ayano Shimizu	Liang En-shuo Tsao Chia-yi	4–6, 6–4, [10–3]
Win	19–23	Nov 2024	Keio Challenger, Japan	W50	Hard	Ayano Shimizu	Cho I-hsuan Cho Yi-tsen	6–4, 7–6(2)

• Momoko Kobori at the Women's Tennis Association
• Momoko Kobori at the International Tennis Federation