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.

On September 29, 1840, he married Sally Ann Dorsey and made his home in Ellicott City, Maryland.

[1] In 1843, he was elected to a seat in the Maryland House of Delegates from Howard County and in 1845, the Democrats nominated him for Congress.

He was inaugurated on January 11, 1854, and he pledged himself to work for the establishment of a system of common schools, the improvement of Maryland’s soils, and increased aid to agriculture.

[1] On January 13, 1858, following the election of his 'Know-Nothing' successor Thomas Holliday Hicks, Ligon retired to his Howard County estate 'Chatham' near Ellicott City.