Harold L. "Trey" Stewart III (born February 7, 1994) is an American politician from Maine. Stewart, a Republican from Presque Isle, has represented District 2 in the Maine Senate since 2020 when he defeated Democrat incumbent Michael E. Carpenter. From 2016 to 2020, Stewart served in the Maine House of Representatives. During the 2019-20 session, he served as Assistant Minority Leader.^[1]

Following his re-election in November 2022, Stewart was elected by this Republican caucus colleagues as Senate Minority Leader. ^[2]

Stewart earned a BA in political science and sociology (2016) and an MBA from the University of Maine (2018). He graduated from the University of Maine School of Law in 2022 and was admitted to the Maine State Bar Association later that same year.^[3] Stewart also serves as a reservist in the United States Navy and previously served as a volunteer firefighter in his hometown of Presque Isle, Maine.

v t e Statewide political officials of Maine
U.S. senators	Susan Collins Angus King
State government	Janet Mills, Governor Shenna Bellows, Secretary of State (elected by Legislature) Aaron Frey, Attorney General (elected by Legislature) Matthew Dunlap, Auditor (elected by Legislature) Henry Beck, Treasurer (elected by Legislature)
Senate	Troy Jackson, President Eloise Vitelli, Majority Leader Trey Stewart, Minority Leader
House	Rachel Talbot Ross, Speaker Maureen Terry, Majority Leader Billy Bob Faulkingham, Minority Leader
Supreme Court	Valerie Stanfill, Chief Justice Andrew Mead Andrew M. Horton Catherine Connors Rick E. Lawrence Wayne R. Douglas 1 seat vacant, Associate Justices