Gabriel Hiester (1749–1824) was an American political and military leader from the time of the American Revolution to the early-19th century, and was a member of the Hiester Family political dynasty. A brother of John Hiester and Daniel Hiester, he was a Jeffersonian Republican who served in Pennsylvania's unicameral Assembly, House of Representatives and State Senate, representing Berks and Dauphin counties. He also practiced chattel slavery, according to early nineteenth century newspapers.