Niagara may refer to:

• Niagara Falls, the famous waterfalls in the Niagara River
• Niagara River, part of the U.S.–Canada border
• Niagara Escarpment, the cliff over which the river forms the falls
• Niagara Whirlpool, a natural whirlpool downstream from the falls
• Niagara Gorge, formed by the recession of the falls

• Niagara Falls, New York, the U.S. city adjacent to the falls
• Niagara County, New York
  • Niagara Falls State Park, the oldest state park in the US
  • Niagara Escarpment AVA, New York wine region
• Niagara, New York, a town
• Fort Niagara, near Youngstown, New York
• Niagara Frontier, a region south of Lakes Ontario and Erie
• Buffalo–Niagara Falls metropolitan area
• Buffalo Niagara Region, an economic region

• Niagara Falls, Ontario, the Canadian city adjacent to the falls
• Niagara-on-the-Lake
• Niagara Peninsula, between Lakes Ontario and Erie
• Niagara (federal electoral district), a 19th-century federal House of Commons district and historic county
• Niagara (provincial electoral district)
• Regional Municipality of Niagara
• Diocese of Niagara

• Niagara, Western Australia, an abandoned town in the goldfields

• Niagara, British Columbia
• Niagara, Toronto, a neighbourhood
• Niagara Peak, a mountain
• Mitchell Lake/Niagara Park, the original name of Cariboo Mountains Provincial Park

• Niagara, Kentucky
• Niagara, North Dakota
• Niagara, Oregon
• Niagara, Wisconsin
• Niagara (town), Wisconsin

• Niagara (painter and singer) (fl. from 1974), an American punk singer and painter
• Niagara (album) by Red Aim, 2003
• Niagara (band), a French rock band
• Niagara (board game)
• Niagara (1953 film), a film noir starring Marilyn Monroe
• Niagara (2022 film), a Canadian comedy-drama film
• Niagara: Miracles, Myths and Magic, a 1986 IMAX film
• "Niagara" (The Office), an episode of the TV series
• Niagara (Frederic Edwin Church), an 1857 painting
• "Niagara", a song by Sara Evans from the album Restless

• Niagara (ship), the name of several ships
• Niagara (tug), that sank on Lake Superior in 1904
• Niagara (yacht) a 65-foot sloop built in 1895
• PS Niagara, a Great Lakes steamboat
• HMS Linnet (1814), built in 1814 as Niagara
• HMS Niagara, earlier known as HMS Royal George, a British 20-gun wooden sloop
• USS Niagara, the name of several ships of the U.S. Navy

• Niagara (grape)
• Niagara College in Niagara Region, Ontario, Canada
• Niagara University in Niagara County, New York, U.S.
• New York Central Niagara a steam locomotive
• The Niagara, a historic hotel in Niagara Falls, New York, U.S.
• Niagara Bottling, a bottling company.

• All pages with titles beginning with Niagara
• All pages with titles containing Niagara
• Nagara (disambiguation)
• Niagara Falls (disambiguation)
• Battle of Niagara (disambiguation)
• Bushkill Falls, also known as "Niagara of Pennsylvania"
• Niagara, Niagara, a 1997 film