Takuto Niki (仁木 拓人, Niki Takuto, born 12 October 1987) is a Japanese tennis player.

Niki has a career high ATP singles ranking of 278 achieved on 23 March 2015. He also has a career high ATP doubles ranking of 269 achieved on 23 April 2018.

Niki made his ATP main draw debut at the 2015 ATP Shenzhen Open where he qualified for the main draw. He lost to Bai Yan in the first round.

He has reached 22 singles finals to date, posting a record of 10 wins and 12 losses. Additionally, he has reached 57 doubles finals, holding a record of 26 wins and 31 losses. All of his career finals in both single and doubles have come on the ITF Futures Tour with the exception of 1, where he and partner Yuichi Ito lost in the final of the ATP Challenger tournament in Granby Canada.

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Loss	0–1	May 2011	Kazakhstan F2, Taraz	Futures	Hard	Federico Gaio	6–0, 4–6, 2–6
Win	1–1	Jun 2011	Japan F7, Tokyo	Futures	Grass	Hiroki Kondo	6–2, 6–4
Loss	1–2	Mar 2012	Japan F2, Tokyo	Futures	Hard	Chang Yu	2–6, 3–6
Loss	1–3	Apr 2013	Israel F7, Ashkelon	Futures	Hard	Enzo Couacoud	5–7, 1–6
Loss	1–4	Mar 2014	Japan F1, Nishitama	Futures	Hard	Wu Di	2–6, 4–6
Win	2–4	Mar 2014	Japan F3, Kofu	Futures	Hard	Yusuke Watanuki	6–4, 6–2
Loss	2–5	Apr 2014	Japan F4, Tsukuba	Futures	Hard	Masato Shiga	6–3, 6–7(4–7), 3–6
Win	3–5	Jun 2014	Guam F1, Tumon	Futures	Hard	Jeevan Nedunchezhiyan	6–7(6–8), 6–2, 7–5
Win	4–5	Jun 2014	Japan F5, Karuizawa	Futures	Clay	Yuya Kibi	6–4, 3–6, 6–1
Win	5–5	Mar 2015	Japan F1, Nishitama	Futures	Hard	Yuya Kibi	6–3, ret.
Win	6–5	Mar 2015	Japan F2, Tokyo	Futures	Hard	Shintaro Imai	6–7(4–7), 6–4, 6–2
Loss	6–6	Apr 2015	Japan F4, Tsukuba	Futures	Hard	Yasutaka Uchiyama	1–6, 2–6
Win	7–6	Oct 2016	Chinese Taipei F1, Kaohsiung	Futures	Hard	Lee Kuan-Yi	6–4, 6–4
Win	8–6	Oct 2016	Chinese Taipei F2, Kaohsiung	Futures	Hard	Jumpei Yamasaki	4–6, 7–5, 6–3
Loss	8–7	Jan 2017	Hong Kong F6	Futures	Hard	Bai Yan	1–6, 4–6
Loss	8–8	Mar 2017	Japan F1. Nishitama	Futures	Hard	Yusuke Takahashi	5–7, 3–6
Win	9–8	Mar 2017	Japan F3. Kofu	Futures	Hard	Shane Vinsant	6–4, 4–0 ret.
Loss	9–9	Apr 2017	Japan F4. Tsukuba	Futures	Hard	Yusuke Takahashi	2–6, 2–6
Loss	9–10	May 2018	Singapore F2, Singapore	Futures	Hard	Collin Altamirano	6–7(5–7), 3–6
Loss	9–11	Aug 2018	Austria F5, Vogau	Futures	Clay	Matias Zukas	3–6, 3–6
Win	10–11	Sep 2018	USA F26, Fountain Valley	Futures	Hard	Michael Shabaz	6–3, 3–6, 6–3
Loss	10–12	Apr 2019	M25 Matsuyama, Japan	World Tennis Tour	Hard	Shuichi Sekiguchi	4–6, 4–6

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Loss	0–1	Jun 2010	Japan F5, Karuizawa	Futures	Clay	Fumiaki Kita	Lee Chui-Hee Kwon Oh-Hee	5–7, 3–6
Win	1–1	May 2011	Kazakhstan F3, Almaty	Futures	Hard	Arata Onozawa	Mikhail Fufygin Ilia Starkov	1–6, 7–5, [10–7]
Loss	1–2	Jun 2011	India F7, Delhi	Futures	Hard	Vitali Reshetnikov	Divij Sharan Rohan Gajjar	2–6, 6–7(7–9)
Loss	1–3	Sep 2011	Serbia F11, Nis	Futures	Clay	Stepan Khotulev	Gleb Sakharov Mikhail Vasiliev	2–6, 6–2, [7-10]
Win	2–3	Sep 2011	Serbia F12, Soko Banja	Futures	Clay	Stepan Khotulev	Tomislav Jotovski Stefan Micov	7–5, 6–3
Loss	2–4	Nov 2011	Chinese Taipei F4, Tainan	Futures	Clay	Arata Onozawa	Huang Liang-Chi Yi Chu-Huan	3–6, 4–6
Win	3–4	Mar 2012	Japan F2, Tokyo	Futures	Hard	Arata Onozawa	Gao Xin Chang Yu	3–6, 6–1, [10-6]
Loss	3–5	May 2012	China F8, Fuzhou	Futures	Hard	Arata Onozawa	Gao Xin Li Zhe	2–6, 3–6
Win	4–5	Jun 2012	Japan F5, Karuizawa	Futures	Clay	Shota Tagawa	Gengo Kikuchi Yuki Matsuo	6–4, 6–4
Win	5–5	Jul 2012	Japan F7, Sapporo	Futures	Clay	Arata Onozawa	Yasutaka Uchiyama Shota Tagawa	7–6(7–3), 6–2
Loss	5–6	Jul 2012	Granby, Canada	Challenger	Hard	Yuichi Ito	Vasek Pospisil Philip Bester	1–6, 2–6
Loss	5–7	May 2013	Israel F8, Ashkelon	Futures	Hard	Arata Onozawa	Sam Barry Sebastian Lavie	6–7(7–9), 6–2, [10–12]
Win	6–7	May 2013	Israel F9, Ramat Hasharon	Futures	Hard	Arata Onozawa	Sam Barry Daniel Glancy	6–3, 6–4
Loss	6–8	May 2013	Thailand F1, Bangkok	Futures	Hard	Arata Onozawa	Sonchat Ratiwatana Sanchai Ratiwatana	7–6(8–6), 2–6, [7–10]
Loss	6–9	Jun 2013	Guam F1, Tumon	Futures	Hard	Yuichi Ito	Bumpei Sato Yasutaka Uchiyama	6–7(2–7), 4–6
Win	7–9	Sep 2013	Chinese Taipei F2, Taipei City	Futures	Hard	Arata Onozawa	Hsieh Cheng-peng Chen I-Ta	6–4, 6–4
Win	8–9	Dec 2013	Cambodia F2, Phnom Penh	Futures	Hard	Arata Onozawa	Toshihide Matsui Danai Udomchoke	7–6(12–10), 7–6(10–8)
Loss	8–10	Dec 2013	Cambodia F3, Phnom Penh	Futures	Hard	Arata Onozawa	Karunuday Singh Ramkumar Ramanathan	4–6, 3–6
Loss	8–11	Feb 2014	Australia F1, Happy Valley	Futures	Hard	Yasutaka Uchiyama	Marcus Daniell Dane Propoggia	3–6, 2–6
Win	9–11	Mar 2014	Japan F3, Kofu	Futures	Hard	Arata Onozawa	Toshihide Matsui Danai Udomchoke	6–4, 6–2
Win	10–11	Jun 2014	Guam F1, Tumon	Futures	Hard	Bumpei Sato	Yuya Kibi Tomohiro Masabayashi	6–1, 6–3
Loss	10–12	Jun 2014	Japan F6, Kashiwa	Futures	Hard	Arata Onozawa	Yusuke Watanuki Keisuke Watanuki	6–7(4–7), 6–4, [7–10]
Loss	10–13	Jun 2014	Japan F8, Sapporo	Futures	Clay	Arata Onozawa	Takao Suzuki Yasutaka Uchiyama	2–6, 6–7(4–7)
Win	11–13	Oct 2014	Australia F7, Cairns	Futures	Hard	Yuya Kibi	Dane Propoggia Brydan Klein	1–6, 7–6(7–2), [10–4]
Win	12–13	Mar 2015	Japan F1, Nishitama	Futures	Hard	Yuya Kibi	Yuichi Ito Arata Onozawa	6–3, 3–6, [11–9]
Win	13–13	Apr 2015	Japan F4, Tsukuba	Futures	Hard	Shintaro Imai	Jarryd Chaplin Ben McLachlan	6–2, 6–4
Win	14–13	Jun 2015	Japan F6, Kashiwa	Futures	Hard	Yuya Kibi	Lee Duckhee Woo Chung Hyo	6–0, 6–3
Win	15–13	Mar 2016	Japan F3, Kofu	Futures	Hard	Shintaro Imai	Yuya Kibi Toshihide Matsui	6–1, 6–2
Loss	15–14	Apr 2016	Japan F5, Kashiwa	Futures	Hard	Shintaro Imai	Yuichi Ito Sho Katayama	3–6, 3–6
Loss	15–15	Jul 2016	Korea F4, Gimcheon	Futures	Hard	Shintaro Imai	Nam Ji Sung Song Min-Kyu	4–6, 4–6
Win	16–15	Jan 2017	Hong Kong F6	Futures	Hard	Geoffrey Blancaneaux	Karan Rastogi Wong Chun Hun	7–6(8–6), 6–0
Loss	16–16	Mar 2017	Japan F1, Nishitama	Futures	Hard	Kaito Uesugi	Katsuki Nagao Hiromasa Oku	0–6, 6–7(2–7)
Win	17–16	Mar 2017	Japan F2, Tokyo	Futures	Hard	Kaito Uesugi	Gengo Kikuchi Shunrou Takeshima	7–6(7–5), 6–7(2–7), [10–3]
Win	18–16	Apr 2017	Japan F5, Kashiwa	Futures	Hard	Shintaro Imai	Katsuki Nagao Hiromasa Oku	6–4, 6–4
Loss	18–17	Jun 2017	Japan F6, Karuizawa	Futures	Clay	Shintaro Imai	Toshihide Matsui Christopher Rungkat	5–7, 2–6
Win	19–17	Jun 2017	Chinese Taipei F1, Taipei	Futures	Hard	Shintaro Imai	Lee Kuan-Yi Liu Shao-Fan	7–5, 6–4
Loss	19–18	Jun 2017	Chinese Taipei F2, Taipei	Futures	Hard	Shintaro Imai	Yi Chu-Huan Chiu Yu-Hsiang	6–2, 6–7(5–7), [8–10]
Win	20–18	Jul 2017	Hong Kong F3	Futures	Hard	Shintaro Imai	Wong Hong Kit Yeung Pak Long	7–5, 6–2
Loss	20–19	Dec 2017	Hong Kong F5	Futures	Hard	Corentin Denolly	Evan King Michael Zhu	4–6, 2–6
Loss	20–20	Jan 2018	Hong Kong F6	Futures	Hard	Shintaro Imai	Yuto Sakai Yunosuke Tanaka	6–2, 3–6, [4–10]
Win	21–20	Mar 2018	Japan F1, Nishitama	Futures	Hard	Shintaro Imai	Soichiro Moritani Sho Katayama	6–1, 6–4
Win	22–20	Mar 2018	Japan F2, Tokyo	Futures	Hard	Shintaro Imai	Lee Tae-Woo Lim Yong-kyu	7–5, 6–3
Win	23–20	Apr 2018	Japan F6, Matsuyama	Futures	Hard	Shintaro Imai	Yuto Sakai Yuhel Kono	6–4, 6–3
Loss	23–21	May 2018	Singapore F2, Singapore	Futures	Hard	Shintaro Imai	Francis Casey Alcantara Collin Altamirano	1–6, 4–6
Loss	23–22	Jun 2018	Korea F2, Gyeongsan	Futures	Hard	John-Paul Fruttero	Nam Ji Sung Lim Yong-kyu	4–6, 1–6
Loss	23–23	Aug 2018	Austria F5, Vogau	Futures	Clay	Yuta Shimizu	Alejo Vilaro Matias Zukas	3–6, 6–3, [4–10]
Loss	23–24	Aug 2018	Netherlands F4, Oldenzaal	Futures	Clay	Kazuki Nishiwaki	Niels Lootsma Glenn Smits	6–3, 5–7, [6–10]
Loss	23–25	Sep 2018	Canada F7, Toronto	Futures	Hard	Felix Corwin	Francesco Ferrari Michail Pervolarakis	3–6, 3–6
Win	24–25	Mar 2019	M15 Nishitama, Japan	World Tennis Tour	Hard	Shintaro Imai	Wishaya Trongcharoenchaikul Blake Ellis	1–6, 7–6(10–8), [10–5]
Loss	24–26	Mar 2019	M15 Tokyo, Japan	World Tennis Tour	Hard	Shintaro Imai	Nam Ji Sung Song Min-Kyu	6–4, 6–7(4–7), [7–10]
Loss	24–27	Jun 2019	M15 Daegu, South Korea	World Tennis Tour	Hard	Issei Okamura	Lim Yong-kyu Song Min-Kyu	3–6, 5–7
Loss	24–28	Aug 2019	M15 Kiryat Shmona, Israel	World Tennis Tour	Hard	Marat Deviatiarov	Federico Bertuccioli Andrea Picchione	6–4, 4–6, [12–14]
Loss	24–29	Mar 2021	M15 Sharm El Sheikh, Egypt	World Tennis Tour	Hard	Yusuke Takahashi	Jacopo Berrettini Neil Oberleitner	3–6, 3–6
Win	25–29	Jun 2021	M15 Heraklion, Greece	World Tennis Tour	Hard	Yuki Mochizuki	Runhao Hua Ze Zhang	6–3, 6–4
Loss	25–30	Jul 2021	M25 Idanha-a-Nova, Portugal	World Tennis Tour	Hard	Kaito Uesugi	Thomas Fancutt Evan Hoyt	3–6, 2–6
Loss	25–31	Apr 2022	M15 Chiang Rai, Thailand	World Tennis Tour	Hard	Shinji Hazawa	Ji Sung Nam Min Kyu Song	1–6, 4–6
Win	26–31	Jun 2022	M25 Harmon, Guam	World Tennis Tour	Hard	Takeru Yuzuki	Seong Chan Hong Cheong-Eui Kim	1–6, 7–6(7–4) [11–9]

• Takuto Niki at the Association of Tennis Professionals
• Takuto Niki at the International Tennis Federation