Brian Dietzen
- Birthday: 1977-11-14
- Place of birth: Barrington, Illinois, USA
- Also know as: 布萊恩·迪岑
Brian Dietzen (born November 14, 1977) is an American actor best known for his role as Jimmy Palmer on NCIS since 2004. In 2012, he was promoted to season regular at the beginning of the show's tenth season.
