Shannon McMillan (born December 16, 1960) is a former Republican Idaho State Representative representing District 7 from 2012 to 2016. She also served District 2 in the A seat from 2010-2012.
On December 16, 1960, McMillan was born in Waupaca, Wisconsin. McMillan's father is Melvin Guenther, a railroad worker. McMillan's mother is Margaret Guenther, an accountant. McMillan graduated from Mount Baker High School.
McMillan attended East Kootenay Community College.
McMillan was defeated for renomination in the Republican primary in 2016 by Priscilla Giddings, who went on to win her seat.
On March 30, 2017, McMillan announced her intentions via social media that she planned to run for her seat again in 2018. McMillan again lost renomination to Giddings.
McMillan's husband is Kenneth. They have one child. McMillan and her family live in Silverton, Idaho.