Junichi Saito
- Title: Junichi Saito
- Popularity: 1.81
- Known For: Acting
- Birthday:
- Place of Birth: Fukushima, Japan
- Homepage: https://www.production-ace.co.jp/ace_talent/junichisaito/
- Also Known As: サイトウジュンイチ, さいとうじゅんいち, 斉藤 隼一, Junichi Saitou, Junichi Saitō, Jun'ichi Saitou