Abijah Bigelow (December 5, 1775 – April 5, 1860) was a U.S. Representative from Massachusetts. Born in Westminster in the Province of Massachusetts Bay, the son of Elisha and Sarah (Goodridge) Bigelow, Abijah Bigelow studied at Leicester (Massachusetts) Academy and New Ipswich Academy at New Ipswich, New Hampshire. He graduated from Dartmouth College, Hanover, New Hampshire, in 1795. He studied law in Groton, Massachusetts.He was admitted to the Worcester County bar in 1798 and commenced practice in Leominster, Massachusetts, in the same year. He was town clerk of Leominster 1803–1809.He served as member of the Massachusetts House of Representatives 1807–1809. He was a Justice of the Peace 1809-1860 and justice of the quorum 1812–1860.