Elijah Hunt Mills (1776-1829) was an American politician from Massachusetts.
Mills was born in Chesterfield, Massachusetts on December 1, 1776; educated by private tutors and graduated from Williams College in 1797. He studied law, was admitted to the bar, and commenced practice in Northampton, Massachusetts. He was the district attorney for Hampshire County, Massachusetts and opened a law school in Northampton in 1823.
He was a member of the Massachusetts House of Representatives (1811-1814). Mills was elected as a Federalist to the United States House of Representatives (March 4, 1815 - March 3, 1819). Again elected to the Massachusetts House of Representatives in 1819 and became Speaker of the Massachusetts House of Representatives in 1820. He was elected to the United States Senate in 1820 to fill the vacancy caused by the resignation of Prentiss Mellen. Mllls was reelected and served from June 12, 1820 to March 3, 1827. He was an unsuccessful candidate for reelection in 1826. He retired from public life due to ill health.
Mills died in Northampton on May 5, 1829 and was interred in the Bridge Street Cemetery.