Katsuyuki Nakasuga (Japanese: 中須賀 克行, Hepburn: Nakasuga Katsuyuki; born 9 August 1981 in Fukuoka Prefecture) is a Japanese motorcycle racer. He races a factory Yamaha YZF-R1 in the JSB1000 class of the All Japan Road Race Championship. He has won the Suzuka 8 Hours four times (2015, 2016, 2017 and 2018) and the JSB1000 championship title thirteen times (2008, 2009, 2012, 2013, 2014, 2015, 2016, 2018, 2019, 2021, 2022, 2023 and 2025).
Source: “Katsuyuki Nakasuga”, English Wikipedia (CC BY-SA 4.0), excerpt