Thomas Bartlett, Jr. (June 18, 1808 – September 12, 1876) was a U.S. Representative from Vermont.
Born in Sutton, Vermont, Bartlett attended the common schools. He studied law. He was admitted to the bar in 1833 and commenced practice in Groton, Vermont. He moved to Lyndon, Vermont, in 1836 and continued the practice of law. State's attorney for Caledonia County 1839–1842. He served as member of the State senate in 1841 and 1842. He served in the State house of representatives in 1849, 1850, 1854, and 1855. He served as delegate to the State constitutional conventions in 1850 and 1857.
Bartlett was elected as a Democrat to the Thirty-second Congress (March 4, 1851 – March 3, 1853). He served as chairman of the Committee on Expenditures on Public Buildings (Thirty-second Congress). He was an unsuccessful candidate for reelection in 1852 to the Thirty-third Congress. He resumed the practice of law. He died in Lyndon, Vermont, September 12, 1876. He was interred in Lyndon Town Cemetery, Lyndon Center, Vermont.
In 1851, Bartlett aired his dismay for the current behavior of college students in a pamphlet entitled "An Epistolary Disquisition on College Morality." His main complaint was what he felt was the loose language of college students. He had sent an earlier letter to the editor of a local newspaper outlining his complaints and the pamphlet, written just before his induction to the 32nd Congress was written to justify his earlier criticisms.