Osborne, Thomas Mott (1859–1926), a United States authority on the treatment of criminals. He introduced many prison reforms, believing that prisons should rehabilitate rather than punish. Osborne was born in Auburn, New York, and graduated from Harvard in 1884. He became active in the family's farm machinery business and in New York politics. Osborne's interest in prison administration led to his appointment as chairman of the New York Commission on Prison Reform in 1913. To study prison conditions, he spent a week living as a convict in Auburn Prison.
Osborne was warden of Sing Sing Prison from 1914 to 1916. Although hampered by political interference, he instituted reforms, including a form of limited self-government. From 1917 to 1920, he was commander of the naval prison at Portsmouth, New Hampshire.