Canada
- Niagara Falls, byenOntario
- Niagara-on-the-Lake, byenOntario
- Niagara-halvøya, region Ontario
Amerikas forente stater
- Niagara, en by i Grand Forks County, Norddakota
- Niagara Falls, by i Niagara County, New York
- Niagara, by i Niagara County, New York
- Niagara, by i Marinette County, Wisconsin
Annen
- Niagara, elv avNord Amerika
- Niagara Falls, foss av den homonyme elven