Austin Jack Lynch
- Birthday: 1982-09-07
- Place of birth: Los Angeles County, California, USA
- Also know as: Austin Lynch
Austin Jack Lynch is an American actor and director. He is the son of David Lynch and half-brother of Jennifer and Riley Lynch. Austin appeared in the second season of Twin Peaks (1990–1991), a TV series created by his father, where he played Mrs. Tremond's grandson.
