Other
- Atwater (Montreal Metro), a station on the Green Line of the Montreal Metro
- Atwater Street, a street in Montreal
- Atwater Library of the Mechanics' Institute of Montreal, an independent library in Montreal operated by the Mechanics' Institute of Montreal
- Atwater Market, a public market in Montreal
- Atwater v. City of Lago Vista, a United States Supreme Court case
- United States Penitentiary, Atwater, a prison near Atwater, California
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