| Number: | 3 |
| Position: | Guard |
| Shinsuke Kashiwagi | |
| Height Ft: | 6 |
| Height In: | 0 |
| Weight Lb: | 176 |
| Team: | SeaHorses Mikawa |
| League: | B.League |
| Nationality: | Japanese |
| Birth Date: | December 22, 1981 |
| Birth Place: | Obihiro, Hokkaido, Japan |
| Highschool: | Tokai University 4 High |
| College: | Chuo University |
| Draft: | Undrafted |
| Career Start: | 2004 |
| Years1: | 2004–2006 |
| Team1: | Sun Rockers Shibuya |
| Years2: | 2006–2017 |
| Team2: | SeaHorses Mikawa |
| Years3: | 2017–2018 |
| Team3: | Nagoya Diamond Dolphins |
| Years4: | 2018–2020 |
| Team4: | Niigata Albirex BB |
| Years5: | 2020–present |
| Team5: | SeaHorses Mikawa |
Shinsuke Kashiwagi (柏木 真介、born December 22, 1981) is a Japanese professional basketball player. He plays for the SeaHorses Mikawa of the B.League. Kashiwagi was a member of the Japan national basketball team. He played for the team in the 2006 FIBA World Championship and the FIBA Asia Championship 2007 and FIBA Asia Championship 2009.[1]
In the 2009-10 season, Kashiwagi entered the month-long winter break averaging 13.7 points and 3.5 assists per game for the Seahorses.[2] He was named to the West squad for the 2009-10 JBL Super League All-Star game.[3]