Koji Hiwatari
- Title: Koji Hiwatari
- Popularity: 2.783
- Known For: Acting
- Birthday: 1960-10-11
- Place of Birth: Tokyo Prefecture, Japan
- Homepage: https://mausu.net/talent/hiwatari-koji.html
- Also Known As: Kouji Hiwatari, 樋渡宏嗣, 樋渡 宏嗣, ひわたりこうじ, ひわたり こうじ, Kōji Hiwatari