Elijah Hunt Mills (December 1, 1776 – May 5, 1829) was an American politician from Massachusetts.

Mills studied law, was admitted to the bar, and commenced practice in Northampton, Massachusetts.

He was the district attorney for Hampshire County, Massachusetts, and opened Northampton Law School in 1823.

He was elected to the United States Senate in 1820 to fill the vacancy caused by the resignation of Prentiss Mellen.

[2] Through his daughter Harriette, he was a grandfather of Anna Cabot Mills Davis, who married U.S.