The2021 Super Taikyu Series Powered by Hankook was the thirty-first season of theSuper Taikyu Series endurance racing championship. It began on 21 March atTwin Ring Motegi and ended on 14 November atOkayama International Circuit.

D'station Racing won the championship in the series'GT3 category, known as ST-X, with anAston Martin Vantage AMR GT3.

This was the first season for the new ST-Q class, introduced for manufacturer-developed, non-homolgated special racing vehicles. In this class,Toyota andROOKIE Racing introduced the Toyota Corolla H2 Concept, ahydrogen internal combustion engine vehicle based upon theToyota Corolla Sport hatchback.^[1] This car made its racing debut at theFuji SUPER TEC 24 Hours.^[2]Mazda debuted theMazda Demio Bio Concept in the final round at Okayama, which ran on renewablebiodiesel fuel.^[3]

A provisional calendar was announced on 20 November 2020, featuring six rounds at six Japanese motor racing circuits. Twin Ring Motegi moved back to the first round of the championship in March. Following the cancellation of the 2020 round atSuzuka Circuit, its date was moved to September and became the fifth round of the season.

The Fuji 24 Hours was moved from its original dates of 5-6 June to 22-23 May, in order to avoid a clash with24 Hours of Le Mans test day and the24 Hours of Nürburgring.^[4]

64 cars entered throughout the course of the 2021 season. All entries were registered under a Japanese license.

No.	Entrant	Vehicle	Engine	Drivers
ST-X (FIA GT3 homologated vehicles)
9	MP Racing (Rd. 1-4, 6)	Nissan GT-R NISMO GT3 (MY18)	Nissan VR38DETT 3.8 Ltwin-turbochargedV6	Joe Shindo Yusaku Shibata Masami Kageyama Keiichi Inoue (Rd. 1-4) Tsugio Matsuda (Rd. 3) Yuya Motojima (Rd. 3) Ryuichiro Tomita (Rd. 6)
16	Porsche Center Okazaki (Rd. 1-2, 4-6)	Porsche 911 GT3 R (991.2)	Porsche 4.0 Lflat-6	Hiroaki Nagai Yuta Kamimura Yuichi Nakayama
31	apr	Lexus RC F GT3	Toyota 2UR-GSE 5.0 LV8	Hideki Nagai Koki Saga Kazuto Kotaka Hiroaki Nagai (Rd. 3) Yuichi Nakayama (Rd. 3) Yuta Kamimura (Rd. 3)
33	Audi Team Hitotsuyama (Rd. 3)	Audi R8 LMS GT3	Audi 5.2 LV10	Yoshio Tsuzuki Ritomo Miyata Motohiro Ogura Tetsusaburo Tanaka Hideo Honda Akihiro Tsuzuki
81	GTNET Motor Sports	Nissan GT-R NISMO GT3 (MY18)	Nissan VR38DETT 3.8 Ltwin-turbochargedV6	Noboyuki Oyagi Takayuki Aoki Kiyoto Fujinami Ryuichiro Oyagi (Rd. 1-2, 4-6) Natsu Sakaguchi (Rd. 3)
270	Floral Racing with ABSSA	McLaren 720S GT3	McLaren M840T 4.0 Ltwin-turbochargedV8	Keita Sawa Shintaro Kawabata Tadao Uematsu (Rd. 1-3, 5-6) Yuji Ide (Rd. 1-3, 5) Yuki Kawahara (Rd. 3) Teruhiko Hamano (Rd. 4)
777	D'station Racing (Rd. 1-5)	Aston Martin Vantage AMR GT3	Mercedes-Benz M177 4.0 Ltwin-turbochargedV8	Satoshi Hoshino Tomonobu Fujii Tsubasa Kondo
999	CarGuy Racing (Rd. 3)	Honda NSX GT3 Evo	Honda JNC1 3.5 Ltwin-turbochargedV6	Takeshi Kimura Kei Cozzolino Shinya Michimi
ST-Z (RACB GT4 homologated vehicles)
3	Endless Sports	Mercedes-AMG GT4	Mercedes-Benz M159 4.0 Ltwin-turbochargedV8	Yudai Uchida Hideki Yamauchi Togo Suganami Ryo Ogawa (Rd. 1, 3-5)
20	SS/YZ Racing withStudie	BMW M4 GT4 (F82)	BMW S55 3.0 Ltwin-turbochargedV6	Tomohide Yamaguchi Seiji Ara Yuya Sakamoto João Paulo de Oliveira (Rd. 3)
22	Porsche Team EBI Waimarama	Porsche 718 Cayman GT4 Clubsport	Porsche 3.8 LFlat-6	Kizuna Katsumasa Chiyo Naoya Yamano Riki Okusa Tetsuya Yamano (Rd. 3) Giuliano Alesi (Rd. 3)
23	TKRI (Rd. 1-2, 4-6)	Mercedes-AMG GT4	Mercedes-Benz M159 4.0 Ltwin-turbochargedV8	Daisuke Yuya Motojima Takaaki Hamada (Rd. 1, 6)
30	B-Max Engineering (Rd. 1-3)	Mercedes-AMG GT4	Mercedes-Benz M159 4.0 Ltwin-turbochargedV8	Nobuhiro Imada Dragon Yuhi Sekiguchi Mitsunori Takaboshi (Rd. 3) Teppei Natori (Rd. 3)
34	Techno First (Rd. 1-2, 6)	Ginetta G55 GT4	Ford 3.7 LV6	Yuki Tanaka Hironobu Yasuda Shinnosuke Yamada
47	D'station Racing	Aston Martin Vantage AMR GT4	Mercedes-Benz M177 4.0 Ltwin-turbochargedV8	Tatsuya Hoshino Manabu Orido Takuro Shinohara Kenji Hama (Rd. 2-6) Yuhki Nakayama (Rd. 3)
70	Comet Racing	Mercedes-AMG GT4 (Rd. 1-2)	Mercedes-Benz M159 4.0 Ltwin-turbochargedV8	Masaaki Fujii Naoki Yokomizo Kazuhiro Sakai Hajime Noma
77		Mercedes-AMG GT4 (Rd. 1)		Yorikatsu Tsujiko Kei Cozzolino Yusuke Yamasaki Takeshi Kimura
108	Close Up Racing (Rd. 2-6)	Toyota GR Supra GT4	BMW B58B30 3.0 Ltwin-turbochargedI6	Takeshi Matsumoto Toshio Suzuki Jun Fujii (Rd. 2-4) Takuya Kurosawa (Rd. 2-4) Seiya Jin (Rd. 3, 5)
111	Hiroshima Toyopet Racing (Rd. 1-2, 4-6)	Toyota GR Supra GT4	BMW B58B30 3.0 Ltwin-turbochargedI6	Toshiyuki Matsuda Yuga Furutani Yasutaka Hinoi Ryō Hirakawa (Rd. 1-2, 4-5)
170	Birth Racing Project (Rd. 6)	Porsche 718 Cayman GT4 Clubsport	Porsche 3.8 LFlat-6	Kenji Suzuki Kohei Fukuda Yuki Fujii Koichi Okumura
311	C.S.I Racing (Rd. 1-2, 4-6)	Toyota GR Supra GT4	BMW B58B30 3.0 Ltwin-turbochargedI6	Hirokazu Suzuki Yusuke Shiotsu Kimiya Sato Rintaro Kubo (Rd. 1-2, 5-6)
500	Team 5Zigen	Mercedes-AMG GT4	Mercedes-Benz M159 4.0 Ltwin-turbochargedV8	Ryuichiro Otsuka Toshihiro Kaneishi Jake Parsons (Rd. 1-4) Kakunoshin Ohta (Rd. 1, 3, 5-6) Yu Kanamaru (Rd. 3-4)
505	Audi Team AS Sport (Rd. 1-3, 5-6)	Audi R8 LMS GT4	Audi 5.2 LV10	Genki Nishimura Shaun Thong Takeshi Okamoto (Rd. 1-2) Yoshinari Fujiwara (Rd. 1, 3) Shozo Tagahara (Rd. 2-3, 5-6)
885	Hayashi Telempu SHADE Racing	Toyota GR Supra GT4	BMW B58B30 3.0 Ltwin-turbochargedI6	Hiro Hayashi Katsuyuki Hiranaka Ai Miura Shinnosuke Yamada (Rd. 3)
ST-TCR (TCR homologated vehicles)
33	Audi Driving Experience Japan (Rd. 6)	Audi RS 3 LMS TCR	Audi 2.0 LturbochargedI4	Daisuke Imamura Yuki Ano Hideki Nakahara
75	Team Noah	Honda Civic Type R TCR (FK7)	Honda K20C1 2.0 LturbochargedI4	Yoshikazu Sobu Shigetomo Shimono Kuniyuki Haga (Rd. 1, 3, 5) Riki Tanioka (Rd. 1) Toshiro Tsukada (Rd. 2-4, 6) Yuji Kiyotaki (Rd. 2-4, 6) Masataka Kubo (Rd. 3) Shingo Wada (Rd. 5)
97	Racer M&K Racing (Rd. 3-5)	Honda Civic Type R TCR (FK7)	Honda K20C1 2.0 LturbochargedI4	Mitsuhiro Endo Shinji Nakano Syun Koide Kenta Harada (Rd. 3-4) Ryunosuke Sawa (Rd. 3)
ST-Q (development vehicles approved by the STO)
28	ROOKIE Racing	Toyota GR Supra GT4 (DB42) Prototype	BMW B58B30 3.0 Ltwin-turbochargedI6	Naoya Gamou Daisuke Toyoda Kenta Yamashita Yasuhiro Ogura Kazuya Oshima (Rd. 3) Shunsuke Kohno (Rd. 3)
32		Toyota Corolla SportH2 Concept (Rd. 3-6)	Toyota G16E-GTS 1.6 LturbochargedI3	Takuto Iguchi Masahiro Sasaki Morizo Takamitsu Matsui Hiroaki Ishiura (Rd. 3) Kamui Kobayashi (Rd. 3)
37	Mazda Spirit Racing (Rd. 6)	Mazda DemioBio Concept	Mazda Skyactiv-D 1.5 LturbochargedI4	Kaoru Ijiri Ikuo Maeda Kazuhiro Terakawa Yutaka Seki
ST-1
No.	Entrant	Vehicle		Drivers
2	KTM Cars Japan	KTM X-Bow GTX		Taiyo Iida Kazuho Takahashi Hiroki Katoh Hiroki Yoshimoto (Rd. 3-6) Takashi Kobayashi (Rd. 3)
8	BMW Team Studie (Rd. 3)	BMW M2 CS Racing		Takayuki Kinoshita Takashi Ohi Jukuchou Sunako Kouki Yamada Takashi Kochiya
38	Tracy Sports	Toyota GR Supra (DB42)		Ryohei Sakaguchi Yuui Tsutsumi (Rd. 1-3, 5-6) Makoto Hotta (Rd. 1-3, 5-6) Sena Sakaguchi (Rd. 3-4)
71	Akiland Racing (Rd. 1-2, 4-6)	Porsche 911 GT3 Cup (991)		Masayoshi Oyama Kenji Yamamoto Makio Saito (Rd. 1, 4-6) Tatsuya Tanigawa (Rd. 5)
ST-2 (2,001-3,500cc, front-wheel and all-wheel drive)
6	Shinryo Racing Team	Mitsubishi Lancer Evolution X (CZ4A)		Tomohiro Tomimasu Yasushi Kikuchi Masazumi Ohashi Wataru Yamaki (Rd. 3) Takahiro Matsuzawa (Rd. 3)
7				Yoshiki Fujii Masato Narisawa Keisuke Anzai Shingo Imai Akiyoshi Shibuya (Rd. 3) Hirofumi Okumura (Rd. 3)
13	Endless Sports (Rd. 6)	Toyota GR Yaris (GXPA16)		Ryo Ogawa Masaya Hanazato
24	GranValley Racing (Rd. 3)	Toyota GR Yaris (GXPA16)		Masahiro Ohtani Kokuto Kawamura Kenichi Hayashi Motoaki Yamasaki
32	ROOKIE Racing (Rd. 1-2)	Toyota GR Yaris (GXPA16)		Takuto Iguchi Masahiro Sasaki Morizo Takamitsu Matsui
56	Claris Racing (Rd. 2-6)	Toyota GR Yaris (GXPA16)		Hideki Katoh Kizuku Hirota Tomoki Iida Chihiro Inagaki (Rd. 1-4) Ryo Yamada (Rd. 3, 5-6)
59	TOWAINTEC Racing	Subaru WRX STI (VAB)		Manabu Osawa Hitoshi Gotoh Mizuki Ishizaka Hideto Yasuoka (Rd. 3) Shunsuke Sato (Rd. 3)
225	Kobe Toyopet Motor Sports	Toyota GR Yaris (GXPA16)		Seita Nonaka Hibiki Taira Miki Onaga Kengo Ichijo (Rd. 3-5)
743	Honda R&D Challenge (Rd. 1-3, 6)	Honda Civic Type R (FK8)		Junichi Kidachi Hiroki Ishigaki Kengo Yamamoto Hideki Kakinuma (Rd. 1, 3) Shinichi Katsura (Rd. 3) Tomoko Fujishima (Rd. 3) Tetsumei Mochizuki (Rd. 6)
ST-3 (2,001-3,500cc, rear-wheel drive)
15	Okabe Jidosha Motorsport	Nissan Fairlady Z (Z34)		Masaaki Nagashima Kazuomi Komatsu Masaya Kohno Masayuki Ueda (Rd. 3) Isamu Tabata (Rd. 3) Yuga Katsumata (Rd. 3)
35	Techno First (Rd. 6)	Lexus RC 350 (GSC10)		Kazuki Oki Miku Ikejima Shinji Ikegami
39	Tracy Sports with Delta	Lexus RC 350 (GSC10)		Yusuke Tomibayashi Kazuya Oshima Hirotaka Ishii (Rd. 2-6) Yoshiyuki Tsuruga (Rd. 3) Ryuta Ukai (Rd. 3) Akira Suto (Rd. 3)
41				Yuma Shoji Yoshihiro Ito (Rd. 1-4) Ryuta Ukai (Rd. 1-2, 4-5) Takashi Ito (Rd. 3-6) Takuya Otaki (Rd. 3) Yukihiro Yamaji (Rd. 3) Hirohito Ito (Rd. 3) Shinichi Hyodo (Rd. 6)
52	Saitama Toyopet GreenBrave	Toyota Crown RS (ARS220)		Naoki Hattori Hiroki Yoshida Kohta Kawaai Takayuki Hiranuma (Rd. 1-2) Taku Bamba (Rd. 3)
62	HELM Motorsports	Lexus RC 350 (GSC10)		Yuya Hiraki Reiji Hiraki Tomoki Takahashi Ryosuke Matsuzawa (Rd. 3)
244	Max Racing	Nissan Fairlady Z (Z34)		Tetsuya Tanaka Atsushi Miyake Toru Tanaka (Rd. 1-5) Kimiya Sato (Rd. 3)
ST-4 (1,500-2,000cc)
18	Asano Racing Service (Rd. 1-4, 6)	Toyota 86 (ZN6)		Takeo Asano Daiki Fujiwara Ryo Fukatsu (Rd. 1, 3) Masatoshi Fujiwara (Rd. 1) Kota Matsui (Rd. 2-4) Toshikazu Shiba (Rd. 3, 6) Yuya Nakajima (Rd. 3) Yasuhiro Ogushi (Rd. 4)
310	C.S.I Racing	Toyota 86 (ZN6)		Sho Tsuboi Shinya Hosokawa Fuma Horio Rintaro Kubo (Rd. 3) Hirokazu Suzuki (Rd. 3)
884	Hayashi Telempu SHADE Racing	Toyota 86 (ZN6)		Yuji Kunimoto Keishi Ishikawa Eijiro Shimizu (Rd. 2-6) Morio Nitta (Rd. 3)
ST-5 (up to 1,500 cc)
4	Team Bride	Honda Fit3 RS (GK5)		Yuya Ohta Hiroshi Ito Hidefumi Minami (Rd. 1-2, 6) Seijiro Aihara (Rd. 1-2) Takuya Shiga (Rd. 3) Soichi Kurosu (Rd. 3) Kazuaki Yasui (Rd. 3-5) Takao Seto (Rd. 3-4, 6) Takuji Okada (Rd. 5)
17	Team NOPRO	Mazda Demio (DE5FS) (Rd. 1-2) Mazda Demio Diesel Turbo (DJ5FS) (Rd. 3-6)		Tobio Ohtani Masataka Inoue Toshihiko Nogami Yoshihiro Kato (Rd. 1-5) Junichi Agematsu (Rd. 3) Hideyoshi Nishizawa (Rd. 3) Kazunari Yoshioka (Rd. 6)
37		Mazda Demio Diesel Turbo (DJ5FS) (Rd. 1-5)		Kaoru Ijiri Kazunari Yoshioka Yutaka Seki Tatsuya Nogami (Rd. 1, 3-5) Hiroaki Yamamoto (Rd. 3)
50	Love Drive Racing	Mazda Roadster (ND5RC)		Koji Yamanishi Hiroyuki Matsumura Yoshihito Shinoda Takashi Hata (Rd. 3)
78				Junko Fujii Jco Iinuma Tatsuya Shuto (Rd. 3-4) Takahiro Kimura (Rd. 3) Hiroki Takenouchi (Rd. 5)
66	Over Drive	Mazda Roadster (ND5RC)		Takayuki Takechi Tatsuya Ota Takahisa Ohno Kyosuke Inomata Shuichiro Hokazono (Rd. 3) Hirobon (Rd. 3)
456				Riku Hashimoto Kousei Kanto Tatsuya Osaki Koji Obara (Rd. 1, 3-4) Takafumi Katsuki (Rd. 3, 5) Ryosuke Kagami (Rd. 3)
67	Team Yamato (Rd. 2-3, 6)	Honda Fit3 RS (GK5)		Ryohei Yasui Shinya Uchiyama Hideaki Ito Ryo Mukumoto (Rd. 2-3)
72	Nihon Automobile College	Mazda Roadster (ND5RC)		Makoto Kanai Tatsuya Okahara (Rd. 1-4) Yasuhiro Matsuo (Rd. 1, 3) Misaki Furuta (Rd. 1) Anna Inotsume (Rd. 2-6) Tatsuya Ishii (Rd. 2) Toshihiro Kubota (Rd. 3) Hachiro Osaka (Rd. 3) Tetsuya Yamano (Rd. 5) Mamoru Okada (Rd. 6)
88	Murakami Motors	Mazda Roadster (ND5RC) (Rd. 1-4, 6)		Hiroyuki Murakami Tatsuya Tanigawa Yasunori Nakajima (Rd. 1-3) Keiji Amemiya (Rd. 3-4) Naoki Yamaya (Rd. 3, 6)
120		Mazda Roadster (ND5RC) (Rd. 2, 4, 6)		Haruhiko Sugino Ikuo Maeda (Rd. 2, 4) Kazuhiro Terakawa (Rd. 2, 4) Akira Nakamura (Rd. 6) Takeshi Wakitani (Rd. 6)
103	HMRacers	Mazda2 (DJLFS)		Kota Sasaki Tomomitsu Senoo Soichiro Yoshida (Rd. 1-3, 5-6) Yugo Osaki (Rd. 3-4) Ryunosuke Yoshida (Rd. 3)
110	Hiroshima Toyopet Racing (Rd. 6)	Toyota Vitz (NCP131)		Ryoji Matsumoto Yasunori Matsumoto Ryusuke Masumoto
222	Honda Cars Tokai	Honda Fit3 RS (GK5)		Toshiki Takeuchi Masanori Tanaka Hajime Saimen Daisuke Yamawaki (Rd. 1-5) Masaki Nishihata (Rd. 3)

Round	Circuit	Race	ST-X Winners	ST-Z Winners	ST-TCR Winners	ST-Q Winners	ST-1 Winners	ST-2 Winners	ST-3 Winners	ST-4 Winners	ST-5 Winners
1	Motegi	[5][a]	No.777D'station Racing	No.22 Porsche Team EBI Waimarama	No.75 Team Noah	No.28ROOKIE Racing	No.2 KTM Cars Japan	No.225 Kobe Toyopet Motorsports	No.244 Max Racing	No.884Hayashi Telempu SHADE Racing	No.66 Over Drive
			Satoshi Hoshino Tomonobu Fujii Tsubasa Kondo	Kizuna Katsumasa Chiyo Naoya Yamano Riki Okusa	Kuniyuki Haga Yoshikazu Sobu Shigetomo Shimono Riki Tanioka	Naoya Gamou Daisuke Toyoda Kenta Yamashita Yasuhiro Ogura	Taiyo Iida Kazuho Takahashi Hiroki Katoh	Seita Nonaka Hibiki Taira Miki Onaga	Toru Tanaka Tetsuya Tanaka Atsushi Miyake	Yuji Kunimoto Keishi Ishikawa	Takayuki Takechi Tatsuya Ota Takahisa Ohno Kyosuke Inomata
2	Sugo	Group 1[6]	No.16 Porsche Center Okazaki	No.23TKRI	No.75 Team Noah	No.28ROOKIE Racing	No.38 Tracy Sports	did not participate
			Hiroaki Nagai Yuta Kamimura Yuichi Nakayama	Daisuke Yuya Motojima	Toshiro Tsukada Yoshikazu Sobu Shigetomo Shimono Yuji Kiyotaki	Naoya Gamou Daisuke Toyoda Kenta Yamashita Yasuhiro Ogura	Yuui Tsutsumi Ryohei Sakaguchi Makoto Hotta
		Group 2[6]	did not participate					No.225 Kobe Toyopet Motorsports	No.52Saitama Toyopet GreenBrave	No.884Hayashi Telempu SHADE Racing	No.456 Over Drive
								Seita Nonaka Hibiki Taira Miki Onaga	Naoki Hattori Hiroki Yoshida Kohta Kawaai Takayuki Hiranuma	Yuji Kunimoto Keishi Ishikawa Eijiro Shimizu	Riku Hashimoto Kousei Kanto Tatsuya Osaki
3	Fuji	[7][b]	No.81 GTNET Motor Sports	No.3 Endless Sports	No.97 Racer M&K Racing	No.28ROOKIE Racing	No.2 KTM Cars Japan	No.7 Shinryo Racing Team	No.62HELM Motorsports	No.18 Asano Racing Service	No.456 Over Drive
			Noboyuki Oyagi Takayuki Aoki Kiyoto Fujinami Natsu Sakaguchi	Yudai Uchida Hideki Yamauchi Togo Suganami Ryo Ogawa	Mitsuhiro Endo Shinji Nakano Syun Koide Ryunosuke Sawa Kenta Harada	Naoya Gamou Daisuke Toyoda Kenta Yamashita Yasuhiro Ogura Kazuya Oshima Shunsuke Kohno	Taiyo Iida Hiroki Katoh Takashi Kobayashi Hiroki Yoshimoto Kazuho Takahashi	Yoshiki Fujii Masato Narisawa Keisuke Anzai Shingo Imai Akiyoshi Shibuya Hirofumi Okumura	Yuya Hiraki Reiji Hiraki Tomoki Takahashi Ryosuke Matsuzawa	Takeo Asano Daiki Fujiwara Toshikazu Shiba Kota Matsui Ryo Fukatsu Yuya Nakajima	Riku Hashimoto Kousei Kanto Tatsuya Osaki Koji Obara Takafumi Katsuki Ryosuke Kagami
4	Autopolis		No.290 Floral Racing with ABSSA	No.47D'station Racing	No.97 Racer M&K Racing	No.28ROOKIE Racing	No.2 KTM Cars Japan	No.225 Kobe Toyopet Motorsports	No.39 Tracy Sports with Delta	No.310 C.S.I Racing	No.50 Love Drive Racing
			Teruhiko Hamano Keita Sawa Shintaro Kawabata	Tatsuya Hoshino Manabu Orido Takuro Shinohara Kenji Hama	Mitsuhiro Endo Shinji Nakano Syun Koide Kenta Harada	Naoya Gamou Daisuke Toyoda Kenta Yamashita Yasuhiro Ogura	Taiyo Iida Kazuho Takahashi Hiroki Katoh Hiroki Yoshimoto	Seita Nonaka Hibiki Taira Miki Onaga Kengo Ichijo	Yusuke Tomibayashi Kazuya Oshima Hirotaka Ishii	Sho Tsuboi Shinya Hosokawa Fuma Horio	Koji Yamanishi Yoshihito Shinoda Hiroyuki Matsumura
5	Suzuka	[8]	No.777D'station Racing	No.47D'station Racing	No.97 Racer M&K Racing	No.28ROOKIE Racing	No.2 KTM Cars Japan	No.59 TOWAINTEC Racing	No.39 Tracy Sports with Delta	No.310 C.S.I Racing	No.66 Over Drive
			Satoshi Hoshino Tomonobu Fujii Tsubasa Kondo	Tatsuya Hoshino Manabu Orido Takuro Shinohara Kenji Hama	Mitsuhiro Endo Shinji Nakano Syun Koide	Naoya Gamou Daisuke Toyoda Kenta Yamashita Yasuhiro Ogura	Taiyo Iida Hiroki Katoh Hiroki Yoshimoto Kazuho Takahashi	Manabu Osawa Hitoshi Gotoh Mizuki Ishizaka	Yusuke Tomibayashi Kazuya Oshima Hirotaka Ishii	Sho Tsuboi Shinya Hosokawa Fuma Horio	Takayuki Takechi Tatsuya Ota Takahisa Ohno Kyosuke Inomata
6	Okayama	Group 1[9]	No.16 Porsche Center Okazaki	No.311 C.S.I Racing	No.75 Team Noah	No.28ROOKIE Racing	No.38 Tracy Sports	No.225 Kobe Toyopet Motorsports	did not participate
			Hiroaki Nagai Yuta Kamimura Yuichi Nakayama	Hirokazu Suzuki Rintaro Kubo Yusuke Shiotsu Kimiya Sato	Toshiro Tsukada Yoshikazu Sobu Shigetomo Shimono Yuji Kiyotaki	Naoya Gamou Daisuke Toyoda Kenta Yamashita Yasuhiro Ogura	Yuui Tsutsumi Ryohei Sakaguchi Makoto Hotta	Seita Nonaka Hibiki Taira Miki Onaga
		Group 2[9]	did not participate			No.37 Mazda Spirit Racing	did not participate		No.52Saitama Toyopet GreenBrave	No.884Hayashi Telempu SHADE Racing	No.456 Over Drive
						Kaoru Ijiri Ikuo Maeda Kazuhiro Terakawa Yutaka Seki			Naoki Hattori Hiroki Yoshida Kohta Kawaai	Yuji Kunimoto Keishi Ishikawa Eijiro Shimizu	Riku Hashimoto Kousei Kanto Tatsuya Osaki

Championship points were awarded in every class with the exception of ST-Q at the end of each event. Each team's five highest-scoring rounds counted towards the final championship standings.

• Super Taikyu Series official site (in Japanese)

• Super Taikyu seasons
• 2021 in Japanese motorsport
• 2021 in TCR Series
• 2021 in Japanese sport

• CS1 Japanese-language sources (ja)
• Articles with short description
• Short description matches Wikidata