Matthew Dunlap (born November 26, 1964) is an American politician from Maine, who is the Maine state auditor since November 2022, and previously from January to October 2021. A member of the Democratic Party, Dunlap was secretary of state of Maine from January 7, 2013, to January 4, 2021, and previously from 2005 to 2011. In 2012, he sought to become his party's nominee to replace retiring Olympia Snowe, but lost in the primary to State Senator Cynthia Dill.

Prior to his first election as secretary of state in 2005, Dunlap represented Old Town in the Maine House of Representatives for four terms beginning in 1996. On December 2, 2020, Dunlap was elected Maine State Auditor by the Maine Legislature and took office on January 4, 2021. Dunlap had to vacate the position after failing the exams needed to meet the requirements of the position the following October, and was replaced by Jacob Norton. He did later meet the requirements and was selected for the position again on November 14, 2022.

Dunlap is currently a candidate in the Democratic primary for Maine's 2nd congressional district in the 2026 election.

Matthew Dunlap was born and raised in Bar Harbor, Maine. He attended the Bar Harbor school system and graduated from Mount Desert Island High School, where he was a captain of the track team. He earned B.A. and M.A. degrees in history and English respectively from the University of Maine. Dunlap also completed the Senior Executives in State and Local Government program at Harvard University. Prior to entering politics, he worked in a variety of jobs including as a textile worker, fur trapper, publishing editor, radio talk-show host, cook, waiter, and bartender.

In 1996, Dunlap ran to represent Old Town in the Maine House of Representatives when incumbent Robert Keane retired after one term. Dunlap defeated Republican Sean Stillings with 48% of the vote. He won re-election in 1998 with 64% of the vote, in 2000 with 68% of the vote, and in 2002 ran unopposed.

Dunlap served in the Maine House of Representatives from 1996 to 2004. He was actively involved in environmental and wildlife issues, including serving as House Chair of the Joint Standing Committee on Inland Fisheries and Wildlife. In 1999, he proposed restructuring the Atlantic Salmon Authority. He also supported legislation that increased moose hunting permits and sponsored a bill that would allow the Department of Inland Fisheries to contract with a consulting firm for the fisheries evaluation. He opposed the banning of deer decoys and the ultimately unsuccessful 2004 Question 2 referendum, which in his opinion would end bear hunting in the state.

In 2004, Dunlap was elected Secretary of State of Maine by the Maine Legislature, a role in which he served from 2005 until 2011. During his tenure as secretary of state, Dunlap oversaw the modernization of the way the Secretary of State's office delivers services to the public electronically and directed the implementation of Maine's Military and Overseas Voter Empowerment (MOVE) Act, allowing military personnel and others abroad secure and prompt access to the ballot. Dunlap also served as president of the National Association of Secretaries of State from 2010 until 2011. After the Republican Party took control of the Maine Legislature in 2010, Dunlap was succeeded by State Senator Charlie Summers following a vote of 53% to 47%.

Dunlap was again selected to be secretary of state by the Legislature after Democrats regained control of both chambers in the 2012 elections. He took the oath of office on January 7, 2013. He is the first person elected to non-consecutive terms as secretary of state since 1880, when S.J. Chadbourne held the position after holding it from 1876 to 1878.