Barry Lynn Winmill (born March 18, 1952) is an American federal judge.
A native of the state of Idaho, Winmill graduated from Idaho State University and Harvard Law School before practicing law in Colorado and Idaho.
Winmill was appointed as an Idaho state judge in 1987, serving in this position until 1995, when President Bill Clinton nominated Winmill to a vacancy on the United States District Court for the District of Idaho.
Winmill was confirmed by the Senate and took office later that year.
He later served as chief judge of the court for 19 years, deciding a number of noteworthy cases during his tenure.