David Sinclair is an American politician who has served as a member of the Maine House of Representatives since November 9, 2023. He represents Maine's 50th House district. Outside of politics, he is a lawyer.
Sinclair served two terms as a member of the Bath city council from 2008 to 2014. In 2014, he ran for District Attorney of Maine's sixth Prosecutorial District, but lost to Geoffrey Rushlau. On November 7, 2023, Sinclair was elected to the Maine House of Representatives in a special election following the resignation of Sean Paulhus. He assumed office November 9, 2023., and was re-elected in a contested election in 2024.
Sinclair graduated from Brandeis University and the University of Maine School of Law.