John G. Bergen (December 4, 1814 – July 18, 1867) was an American public servant and New York City Police Commissioner.

A member and treasurer of the Board of Police Commissioners, he and Thomas Coxon Acton assumed command of the NYPD during the New York Draft Riots after Superintendent John Kennedy was injured at the hands of a mob.

Being accustomed to an active life outdoors however, his health suffered during his later years as a result of the time spent at Metropolitan headquarters.

His digestive organs became rapidly weaker over the next year, but he chose to remain at his post and continued attending meetings with the other commissioners until early July 1867.

Among those in attendance were Superintendent Kennedy, Commissioners Acton, Benjamin F. Manniere and Joseph S. Bosworth, Inspectors John S. Folk, James Leonard and George W. Dilks, Precinct Captains Brown, Elanson Wilson, Cornelius Woglom, Francis C. Speight, Theron S. Copeland, James Powers, John J. Williamson, Enoch Jacobs, George R. Rhodes, Olives B. Leich, Joel Smith and countless sergeants and other officers.