Thomas Beall Davis (April 25, 1828 – November 26, 1911), of Keyser, West Virginia, was an American Democratic politician.

[1] Davis moved to Piedmont in present-day West Virginia in 1854 and began working for the Baltimore and Ohio Railroad.

[1] He then relocated to Keyser, West Virginia, several years later, and he engaged in the mercantile, lumbering, banking, mining, and railroad building businesses.

[1] In 1876 Davis became a Member of West Virginia Democratic State Executive Committee, serving until 1907.

Davis became a U.S. Representative from West Virginia's 2nd District[2] in the 59th Congress, serving from 1905 to 1907 after the resignation of Republican Alston Dayton.