Jeremiah Mason (April 27, 1768 - October 14, 1848) was a United States Senator from New Hampshire. Born in Lebanon, Connecticut, he graduated from Yale College in 1788, studied law, moved to Vermont, and was admitted to the bar in 1791. He moved to New Hampshire, practiced law, and was attorney general of New Hampshire from 1802 to 1805.
Mason was elected as a Federalist to the U.S. Senate to fill the vacancy in the term beginning March 4, 1813, and served from June 10, 1813, until June 16, 1817, when he resigned. He was a member of the New Hampshire House of Representatives in 1820-1821 and 1824, and was president of the Portsmouth branch of the United States Bank in 1828-1829. He moved to Boston in 1832 and retired from the practice of law in 1838, but continued as chamber counsel up to the time of his death in Boston, 1848; interment was in Mount Auburn Cemetery, Cambridge, Massachusetts.