Ryoma Henzan

is a Japanese racing driver. He is the 2023 Porsche Sprint Challenge Japan – GT4 champion.

Career Henzan began his karting career in 2014, competing in the Rotax Max Series Okinawa and finishing runner-up in the standings. Racing in karts until 2021, Henzan most notably won the Kart Race in Suzuka series twice in both 2018 and 2019 in the Parilla X30 class.

In 2022 Henzan stepped up to single-seaters, joining TGR-DC Racing School to compete in the F4 Japanese Championship. Taking points on debut at Fuji by finishing sixth in race one, Henzan finished 19th in race two before retiring in race one and finishing ninth in race two at the following round at Suzuka. After being out of the points in the following three rounds, Henzan finished ninth in race two at Autopolis before ending the season with an eighth place finish at Motegi en route to 14th in points.

The following year, Henzan became a Porsche Japan junior alongside Takumi Sato, making his debut in the Porsche Sprint Challenge Japan and returning to the F4 Japanese Championship, albeit with ATeam Buzz Racing. In the former, Henzan won all eight races of the season to clinch the GT4 title with the maximum possible amount of points. In the latter, Henzan took his first points of the season sixth time out at Fuji by finishing sixth in race two. Henzan then finished seventh in both races at Suzuka, before finishing eighth and ninth in the second races at both Sportsland Sugo and Autopolis. In the final round of the season at Motegi, Henzan scored his best ever result in the series by taking fourth in both races, as he closed out the season 12th in points.

In 2024, Henzan was retained by Porsche Japan as its junior as he competed in both Porsche Carrera Cup Japan and the ST-Z class of the Super Taikyu Series. In the former, he took his only win of the season at the finale at Sportsland Sugo and finished runner-up to Reimei Ito in points. In the latter, Henzan took his maiden ST-Z win at the penultimate round of the season at Okayama and helped the team finish third in the standings.

In 2025, Henzan joined Porsche Team Ebi to continue his Super Taikyu campaign in the ST-Z class. Henzan scored his first podium by finishing third at Suzuka, before following it up with a third-place finish at the Fuji 24 Hours and a second-place finish at the season-ending race at Fuji to end the year fifth in class. During 2025, Henzan also joined Brand New Racing to race in select rounds of the Superrace Championship. In the third round of the season at Inje Speedium, Henzan scored his maiden series podium by finishing third in the first night race of the season.

The following year, Henzan remained in ST-Z competition, as he switched to Kokusai Group Sports Team for his third full season in Super Taikyu.

Karting record Karting career summary

Racing record Racing career summary SeasonSeriesTeamRacesWinsPolesF/LapsPodiumsPointsPosition 2022 F4 Japanese Championship TGR-DC Racing School 14 0 0 0 0 16 14th2023 F4 Japanese Championship ATeam Buzz Racing 14 0 0 0 0 48 12th Porsche Sprint Challenge Japan – GT4 Porsche Japan 8 8 8 8 8 160 1st Super Taikyu – ST-Z Techno First 1 0 0 0 0 99‡3rd‡2024 Porsche Carrera Cup Japan Porsche Japan 13 1 0 2 7 1762nd Super Taikyu – ST-Z Techno First 7 1 0 1 4 81.5‡3rd‡2025 Super Taikyu – ST-Z Porsche Team EBI 6 0 0 0 3 76.5‡ 5th‡ Superrace Championship – Super 6000 Brand New Racing 5 0 0 0 1 18 17th 2026 Super Taikyu – ST-Z Kokusai Group Sports Team ‡ ‡Sources:

Complete F4 Japanese Championship results (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap)