| 1 | Takanokono Hotel Fuji GT 300 km Race | 
Teams and driversA total of 45 teams registered to take part in the 2020 Super GT season, 15 teams from the GT500 class, and 30 teams from the GT300 class.
Vehicle changesGT500 Class- All GT500 vehicles will be prepared to the unified Class One technical regulations created by the GTA and the Deutsche Tourenwagen Masters' sanctioning body, the ITR. The cars will feature a standard engine control unit manufactured by Bosch, who joined Super GT as a sponsor of the series from 2020.
- After being represented by the Lexus brand from 2006 to 2019, Toyota will field the fifth-generation GR Supra in the GT500 Class, beginning in 2020. The GR Supra will be powered by the same Toyota RI4A powerplant used in its predecessors, the Lexus RC F, and the Lexus LC 500. To reflect the change, all six of Toyota's GT500 entries will carry the "TGR Team" prefix in their team names.
- After a change in the GT500 technical regulations that state that the engine must be mounted in front of the cockpit, Honda announced that they will field a front-engined version of the traditionally mid-engined NSX-GT in 2020. It will be the first Honda GT500 car with a front-engine layout since the HSV-010 GT raced from 2010 to 2013.
- Nissan will field an updated version of the GT-R NISMO GT500 in 2020.
GT300 Class- Saitama Toyopet GreenBrave will field the fifth-generation Toyota GR Supra in the GT300 Class from 2020. Built to JAF-GT GT300 regulations, the GT300 GR Supra will be powered by Toyota's 5.4 litre 2UR-GSE V8 engine.
- On December 6, 2019, Tsuchiya Engineering announced a customer racing partnership with Porsche to field the latest 911 GT3-R in the 2020 season.
- X Works Racing will change from the Nissan GT-R NISMO GT3 to the Audi R8 LMS GT3 in 2020.
Entrant changesGT500 ClassHonda: On January 10, 2020, Honda announced their Super GT Program.
- * On October 29, 2019, 2018 GT500 Drivers' Champion Jenson Button announced that he would not return to race in Super GT in 2020. Tadasuke Makino, who drove for Nakajima Racing, transferred to Team Kunimitsu in 2020, in place of Button.
- * Team Mugen driver Daisuke Nakajima announced that he retire from racing after 2019 season. Reigning Formula 3 Asian Championship and Porsche Carrera Cup Japan Champion, Ukyo Sasahara, joined Team Mugen to replace Nakajima. Red Bull have become the title sponsor of Team Mugen, beginning in 2020.
- * Narain Karthikeyan who raced with Nakajima Racing, confirmed in January that he would not return to the series. Takuya Izawa moved to Nakajima Racing in an all-new driver lineup alongside fellow GT300 graduate, Hiroki Otsu.
- * Reigning GT300 Drivers' Champion, Nirei Fukuzumi, was promoted by Autobacs Racing Team Aguri to their GT500 car, replacing veteran Nissan:
- *On December 7, 2019, Porsche factory driver Frédéric Makowiecki returned to the IMSA WeatherTech Sports Car Championship full-time in 2020, ruling him out for a full-time return to Super GT. His departure from Nissan was confirmed on January 10, 2020, along with that of James Rossiter, who has ended his career in Japan after seven seasons to focus on his role with the DS Techeetah Formula E Team.
- *Katsumasa Chiyo, who raced full-time in the Intercontinental GT Challenge for Nissan in 2019, returns to GT500 on a full-time basis at NDDP Racing with B-Max, replacing Makowiecki.
- *At Team Impul, Kazuki Hiramine steps up from the GT300 class after six seasons, to replace Rossiter.Toyota: Toyota Gazoo Racing announced their 2020 motorsport activities on February 7, 2020.
- *2019 GT500 Championship winners Team LeMans parted ways with Toyota Gazoo Racing at the end of the season. To replace their entry, a new team, "TGR Team Wako's Rookie," was announced for 2020. The new team is owned by KTR Co. Ltd, with vehicle maintenance being handled by TGR Team Cerumo. Wako Chemical, the title sponsor of Team Le Mans from 2016 to 2019, will be the title sponsor of the new team, and 2005 GT500 Drivers' Champion, Toranosuke Takagi, will be the Team Director. TGR Team Wako's Rookie will carry the number 14, and for the first time since 1998, the number one plate, reserved for the GT500 Champion team, will not be in use. The new TGR Team Wako's Rookie entry will feature 2019 GT500 Champion Kazuya Oshima and 2018 All-Japan Formula Three Champion Sho Tsuboi as its drivers. Kenta Yamashita will not return to the series in 2020, as they will focus solely on their roles in the FIA World Endurance Championship and Japanese Super Formula Championship.
- *Tsuboi's place at TGR Team WedsSport Bandoh will be taken by GT300 graduate and 2019 All-Japan F3 vice-champion Ritomo Miyata, the first person on the autism spectrum to race full-time in the premier class of Super GT.
- *2019 All-Japan F3 Champion, Sacha Fenestraz, also steps up to the GT500 class, driving for TGR Team au TOM's. Two-time 24 Hours of Le Mans winner Kazuki Nakajima. Masanori Sekiya resigned as executive director of TGR Team TOM's, effective 31 March.
- * Three-time GT500 Drivers' Champion Juichi Wakisaka, who was the Team Director at Team Le Mans from 2016 to 2019, now takes over the same position at TGR Team SARD.
GT300 Class- On January 29, 2020, Tsuchiya Engineering announced an expanded partnership with title sponsor Hoppy Beverage Company, with Hoppy CEO Mina Ishiwatari purchasing a share of the team, and changed their name to "Hoppy Team Tsuchiya."
- Aston Martin Racing customer squad D'station Racing will partner with Pacific Racing under the new name "Pacific-D'station Racing" in 2020, and changed their number from 7 to 9. They will also be the first full-time GT300 entry to run on Michelin tyres since 2014. 2014 Le Mans class winner and Aston Martin factory driver Nicki Thiim was scheduled to join Pacific-D'station Racing for 2020, alongside Tomonobu Fujii.
- Max Racing, who had competed in the Pirelli Super Taikyu Series' ST-X category from 2018 to 2019, announced that they will move up to the GT300 class of Super GT beginning in 2020. Former Super GT driver Tetsuya Tanaka was appointed team director, and the aforementioned Tsuchiya Engineering will be in charge of vehicle maintenance. They will field a Lexus RC F GT3, running on Yokohama tyres. They appointed GT300 veteran Rintaro Kubo and FIA F4 Japanese Championship graduate Atsushi Miyake as their drivers.
- INGING Motorsport will return to the GT300 class as a stand-alone entry in 2020, fielding a Toyota 86 MC previously used by Panther arto Team Thailand. They will carry the number 6, the number which they had previously used in the 1998 All-Japan GT Championship and had since been used by Team Le Mans until their split from Toyota. Their 86 MC will run on Bridgestone Potenza tyres. The team appointed Toyota Gazoo Racing young driver Kazuto Kotaka and veteran Ryohei Sakaguchi as their full-time driver lineup, joined by third driver Yuui Tsutsumi, who replaced Kotaka for Round 7 at Twin Ring Motegi when Kotaka contracted a high fever.
- Togo Suganami who drove for K2 R&D LEON Racing for last 2 rounds, will race with the team as the full time driver. The 2018 driver champion Haruki Kurosawa will step back, and work with the team as the team director.
- Team LeMans announced that they will take over vehicle maintenance and operation for Audi Team Hitotsuyama beginning in 2020. Two-time Nürburgring 24 Hours winner Christopher Mies and former Team Taisan driver Shintaro Kawabata were announced at Audi Team Hitotsuyama, to replace 2004 GT500 Champion Richard Lyons, and Ryuchiro Tomita, who would join Audi Sport Team WRT in the SRO GT World Challenge Europe Sprint Cup.
- Lamborghini Squadra Corse driver Dennis Lind was scheduled to join JLOC in their number 87 entry alongside Yuya Motojima. 2010 GT500 Champion Takashi Kogure and 2015 GT300 Champion André Couto were announced in the number 88 car.
- With Kazuki Hiramine and Sacha Fenestraz's respective promotions to GT500, Kondo Racing announced a new lineup for their GT300 team, featuring 2010 Japanese Top Formula Champion João Paulo de Oliveira and two-time Fuji 24 Hours winner Kiyoto Fujinami.
- BMW Team Studie will enter the GT300 class for the first time since 2017 under the name "BMW Team Studie x CSL", using the current BMW M6 GT3. Kazumichi Goh, the owner of Team Goh Motorsports, was appointed as the Representative Director of the team. BMW Team Studie x CSL welcomes 2004 24 Hours of Le Mans winner Seiji Ara back to the team, alongside rookie gentleman driver Tomohide Yamaguchi. BMW Works driver Augusto Farfus was announced as a third driver, but did not appear due to COVID-19 travel restrictions.
- Two-time GT500 Champion Masataka Yanagida returned to Super GT full-time at Cars Tokai Dream28, replacing gentleman driver Kazuho Takahashi, who retired from racing in the series and will now focus on his role as team executive.
- All-Japan F3 and Euroformula Open race winner Toshiki Oyu replaced Nirei Fukuzumi at Autobacs Racing Team Aguri in their championship-winning Honda NSX GT3.
- Australian Jake Parsons returned to Super GT after a two-year absence, driving for Drago Corse alongside owner/driver Ryō Michigami.
- Lexus Customer Racing teams K-Tunes Racing and LM Corsa will change tyre suppliers for the 2020 season: K-Tunes Racing will switch from Bridgestone to Dunlop, and LM Corsa will switch from Dunlop to Michelin. All-Japan F3 graduate Shunsuke Kohno replaced Ritomo Miyata at LM Corsa.
- Kohta Kawaai graduated from the FIA F4 Japanese Championship to drive for Saitama Toyopet GreenBrave.
- All-Japan F3 National Class race winner Kizuku Hirota joined Arnage Racing as a third driver.
- Panther arto Team Thailand was renamed arto Ping An Team Thailand, reflecting an increased sponsorship agreement from the Chinese insurance company.
Mid-season changesDue to travel restrictions put into place as a result of the 2019-20 coronavirus pandemic, several driver changes were necessitated, starting from the opening round at Fuji Speedway.
- Heikki Kovalainen was replaced at TGR Team SARD for Round 1 by 2019 GT500 Champion Kenta Yamashita. For Round 2, Kovalainen was replaced by Sena Sakaguchi, before Kovalainen returned to the team at Suzuka Circuit for Round 3.
- On 2 November, TGR Team KeePer TOM's announced that Kenta Yamashita will replace Nick Cassidy for the final two races of the season, as Cassidy began preparations for his debut in the 2021 FIA Formula E World Championship.
- arto Ping An Team Thailand missed Round 1 due to several personnel being unable to enter Japan. Upon their return to the series at Round 2, arto Ping An Team Thailand appointed Masahiro Sasaki and Yuui Tsutsumi to drive for the next four rounds. Sean Walkinshaw and Mathias Beche replaced Sasaki and Tsutsumi from Round 6, after both drivers were cleared to cleared to enter Japan.
- Nicki Thiim was unable to race with Pacific-D'station Racing in 2020. He was replaced for the first four rounds by Kei Cozzolino. Cozzolino then split the last four races with TCR Japan Series driver Takuro Shinohara, who entered Rounds 5 and 8 at Fuji.
- Porsche Carrera Cup Japan champion Tsubasa Kondo replaced Christopher Mies at Audi Team Hitotsuyama for the full season.
- With André Couto and Dennis Lind unable to race with JLOC in 2020, JLOC moved Yuya Motojima to the number 88 car to partner Takashi Kogure. Tsubasa Takahashi and Shinnosuke Yamada were appointed as the new drivers of the number 87 car.
- X Works Racing hired multiple replacement drivers to partner Shaun Thong. Takuro Shinohara drove in Round 1. Ex-Formula Renault Eurocup driver Hiroyuki Matsumura was entered for Round 2, but failed to pass his rookie certification test during practice. Takeshi Kimura of CarGuy Racing then entered Rounds 3 & 4. Kota Sasaki, the 2005 GT300 Champion, was appointed for the remaining four rounds.
- After Sena Sakaguchi was called up to TGR Team SARD for Round 2, K-Tunes Racing appointed Shigekazu Wakisaka to replace him in the same event.
- After the fourth round of the season, Arnage Racing driver Ryosei Yamashita announced that he would be taking a hiatus from racing to focus on his family's business activities. Kizuku Hirota and Hideto Yasuoka split the remaining four races in place of Yamashita.
- FIA F4 Japanese Championship race winner Takuya Otaki joined Tomei Sports for Rounds 6 and 7.
- NILZZ Racing appointed Yusaku Shibata to drive in Round 6 at Suzuka Circuit. For Round 7, they appointed Ryuichiro Tomita, who had just completed his first GT World Challenge campaign in Europe.
- Defending GT300 Champion Shinichi Takagi was injured in a Pirelli Super Taikyu Series crash at Okayama International Speedway on 1 November. FIA Formula 2 race winner Nobuharu Matsushita was announced as Takagi's replacement at Autobacs Racing Team Aguri for the final two rounds of the season.
ResultsDrivers credited with winning Pole Position for their respective teams are indicated in bold text.
| Round | Circuit | Date | Class | Pole position | Race winner | | 1 | 
Championship standingsDrivers' championships;Scoring system
| Position | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th | 9th | 10th | Pole | | Points | 20 | 15 | 11 | 8 | 6 | 5 | 4 | 3 | 2 | 1 | 1 |
|
|