Charlton Thomas Lewis (February 25, 1834 – May 26, 1904) was an American lawyer, writer, and lexicographer, who is particularly remembered as a compiler of several Latin–English dictionaries.

After further studying with a view to entering the ministry of the Methodist Episcopal Church, he served as professor at the State Normal University at Bloomington, Illinois, 1856–57, and from 1858 to 1861 was professor of Greek at Methodist-affiliated Troy University (New York).

[2][3] In 1863-64 he was a United States deputy commissioner of internal revenue.

For a year in 1870–71, he served as the managing editor of the New York Evening Post newspaper.

[3][5] He died in Morristown, New Jersey, as a result of cerebrospinal meningitis.