Peleg Sprague (December 10, 1756 – April 20, 1800) was a politician from the U.S. state of New Hampshire. Sprague was born in Rochester in the Province of Massachusetts Bay. He clerked in a store in Littleton, attended Harvard College, and was graduated from Dartmouth College, Hanover, New Hampshire, in 1783. He studied law, was admitted to the bar in 1785, and commenced practice in Winchendon, Massachusetts. He moved to Keene, New Hampshire, in 1787. He was selectman 1789-1791; county solicitor for Cheshire County in 1794; and member of the New Hampshire House of Representatives in 1797.