Niagara can refer to many different things:

• Niagara Falls
• Niagara Falls State Park
• Niagara River
• Fort Niagara
• Niagara Escarpment
• Niagara University
• Niagara County, New York
• Niagara Regional Municipality, Ontario
• Niagara County, New York
• Niagara_grape
• Niagara (ship)
• Niagara (film)

This also includes several cities:

• Niagara, North Dakota
• Niagara, Wisconsin
• Niagara (town), Wisconsin
• Niagara Falls, New York
• Niagara Falls, Ontario
• Niagara-on-the-Lake, Ontario

The word Niagara comes from the Neutral Indian name for the Falls, Onghiar, (pronounced on-ge-ara) meaning "thunder of waters".