USS Niagara (APA-87) was a Gilliam-class attack transport of the United States Navy. The Niagara was laid down on 20 November 1944 in Wilmington, California. She was launched on 10 February 1945 and commissioned at San Pedro, California, on 29 March 1945.

The seventh USS Niagara (CMc-2/PG-58/AGP-1) was an auxiliary ship of the United States Navy during World War II.

USS Niagara (SP-263) was a vessel of the United States Navy during World War I.

The second USS Niagara was a steam frigate in the United States Navy.

The first USS Niagara was a brig in the United States Navy during the War of 1812.