Thomas Watkins Ligon (May 10, 1810 – January 12, 1881), a Democrat, was the 30th Governor of Maryland in the United States from 1854 to 1858.
He also a member of the United States House of Representatives, serving Maryland's third Congressional district from 1845 until 1849.
He was the second Maryland governor born in Virginia and was a minority party governor, who faced bitter opposition from an openly hostile legislature.