Thomas Hale Sill (October 11, 1783 – February 7, 1856) was a Jacksonian and National Republican member of the U.S. House of Representatives from Pennsylvania.
Thomas Hale Sill was born in Windsor, Connecticut.
He studied law, was admitted to the bar in 1809 and commenced practice in Lebanon, Ohio.
He was elected as an Adams candidate to the Nineteenth Congress to fill the vacancy caused by the death of Patrick Farrelly.
He served as President of the Erie branch of the Second Bank of the United States in 1837.