Thomas Coxon Acton Sr. (February 23, 1823 – May 1, 1898) was an American public servant, politician, reformer, police commissioner of the New York City Police Department and the first appointed president of its Board of Police Commissioners. He and Commissioner John G. Bergen took control of the police force during the New York Draft Riots with Acton directing police and military forced against rioters in Manhattan. He served on the Board of Police Commissioners from 1860 to 1863 and as President of the Board of Police Commissioners from 1863 to 1869.