Kentaro Kumagai
- Title: Kentaro Kumagai
- Popularity: 24.801
- Known For: Acting
- Birthday: 1994-02-16
- Place of Birth: Saitama, Japan
- Homepage: https://haikyo.co.jp/profile/profile.php?ActorID=12741
- Also Known As: Kentarou Kumagai, Kentarō Kumagai, 熊谷 健太郎