USS Ontario

There have been several United States Navy ships that have borne the name Ontario, after Lake Ontario. See also Ontario (disambiguation) for other uses.

The first Ontario was a lake schooner in the United States Navy during the War of 1812.
The second Ontario was a 16 gun rated sloop of war in the United States Navy during the years following War of 1812.
A screw sloop was laid down in 1863 as Ontario, renamed New York 1869 , and sold while still on the stocks, in 1888.
Another Ontario (Fleet Collier No. 2) was laid down as a collier 18 October 1907 at the Mare Island Navy Yard, Vallejo, California; launched 5 December 1908; and commissioned 15 January 1910. She was decommissioned 7 April 1913, was converted into a repair ship and renamed Prometheus (Repair Ship No. 2) on 23 December 1914.
The third Ontario was a single screw seagoing tug, was laid down by the New York Shipbuilding Co., Camden, N. J. 23 November 1911; launched 11 April 1912; and commissioned at Philadelphia Navy Yard 4 September 1912.

This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.