Atsushi Kosaka
- Title: Atsushi Kosaka
- Popularity: 2.44
- Known For: Acting
- Birthday: 1985-02-22
- Place of Birth: Nara Prefecture, Japan
- Homepage: https://www.air-agency.co.jp/talent/man/kosaka_atsushi
- Also Known As: Atsushi Kousaka, 高坂 篤志, Atsushi Kōsaka, 髙坂 篤志