Thomas David Nicholls (September 16, 1870 – January 19, 1931) was an Independent Democratic member of the U.S. House of Representatives from Pennsylvania.
Thomas D. Nicholls was born in Wilkes-Barre, Pennsylvania. He moved to Nanticoke, Pennsylvania, with his parents. He worked in mines as a boy. He studied mining by correspondence and passed a state examination in 1897, received a mine foreman’s certificate of competency, and was appointed superintendent of mines. He was district president of District No. 1 of the United Mine Workers of America, from 1899 to 1909, resigning on account of ill health.
Nicholls was elected as an Independent Democrat to the Sixtieth and Sixty-first Congresses. He was not a candidate for renomination in 1910. He moved to a farm in Somerset County, Maryland, near Princess Anne, in 1911 and engaged in the raising of poultry. He died in Princess Anne in 1931. Interment in Antioch Methodist Episcopal Cemetery.