Debby Barrett is a former Republican member of the Montana State Senate, representing District 36 from 2009 to 2017. Barrett served as President Pro Tempore in 2013 and 2015. She served as Senate presidentfrom 2015 to 2017, making her the first woman to lead the chamber.
Barrett served in the Montana House of Representatives from 2001 to 2009. During her time in the House, she served as Republican Whip.