Thomas F. Byrnes | |
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 Photograph of Byrnes published in his 1886 book Professional Criminals of America | |
| Born | June 15, 1842 |
| Died | May 7, 1910 (aged 67) Manhattan, New York City, U.S. |
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Thomas F. Byrnes (June 15, 1842 – May 7, 1910) was an Irish-born American police officer, who served as head of the New York City Police Department detective department from 1880 until 1895, who popularized the terms "rogues' gallery" and "third degree".[1]