Jim McMillan (born January 15, 1937) is an American politician and former police officer who served as the Jacksonville, Duval County, Florida sheriff from 1986 to 1996.

He graduated from Andrew Jackson High School (Jacksonville) in 1955, then the University of Florida in 1959.

In 1986, Florida Governor Bob Graham appointed him as Sheriff following the retirement of Dale Carson.

McMillan's son, Jim Jr. works for the State Attorney's Office as a forensic artist.

[3] Previously his son was an officer and sketch artist for 16 years at JSO.