Kazuki Hoshino (星野一樹 - Hoshino Kazuki; born October 13, 1977) is a semi-retired Japanese professional racing driver and current team principal (team director) of Team Impul in the Super GT Series and Super Formula Championship.^[1][2][3] He is the son of former racing driver and Impul co-founder, Kazuyoshi Hoshino.

He is a two-time Super GT GT300 class champion (2008, 2010), a four-time Super Taikyu Series champion (2004 ST-3 class, 2014, 2018, and 2019 ST-X class), and a former Nissan factory GT500 driver with his father's team from 2006 to 2007 where he won the 2006 Suzuka 1000km. He also raced in the Formula Nippon (now Super Formula) Championship for Impul in 2006.

Hoshino announced his retirement from racing in Super GT after the 2021 season, and became the Technical Director at Team Impul in 2022. That season, Impul won its first GT500 class championship in 27 years. In 2023, Hoshino succeeded his father as the team director of Impul's Super GT and Super Formula teams.^[4] Hoshino also announced the creation of a new team in Super Taikyu, which would compete in the ST-Z (GT4) class with a new Nissan Z GT4.^[5][6]

Outside of Japan, Hoshino competed in the Nürburgring 24 Hour Race on several occasions, finishing ninth overall in 2015 alongside Michael Krumm, Lucas Ordoñez, and Alex Buncombe. In 2013, Hoshino participated in the Blancpain Endurance Series (now GT World Challenge Europe Endurance Cup with JRM Motorsport alongside Steven Kane and Peter Dumbreck.^[7][8]

(key) (Races in bold indicate pole position) (Races in italics indicate fastest lap)