Many things bear the name Waterloo. They are mostly named directly or indirectly after Waterloo, Belgium, where the Battle of Waterloo was fought.

See:

• Battle of Waterloo
• University of Waterloo
• Waterloo (album), the ABBA album. Also an ABBA song
• Waterloo (movie) (starring Rod Steiger)
• Waterloo Bridge
• Waterloo Station
• Waterloo R.F.C. (a rugby union club based in Liverpool)
• Waterloo Sunset
• Waterloo, New South Wales, Australia
• Waterloo, Belgium
• Waterloo, Ontario (Canada)
• Waterloo, Quebec (Canada)
• Waterloo, Dorset (England)
• Waterloo, Sefton (Merseyside, England)
• Waterloo, New Zealand (a suburb of Lower Hutt)
• Waterloo, Scotland (in Tayside)
• Waterloo, Sierra Leone
• Waterloo, Surinam
• Waterloo, Trinidad & Tobago
• Waterlooville, Hampshire (England)
• Waterlooville, County Kerry (Ireland)

And in the United States:

• Waterloo, Alabama
• Waterloo, Arkansas
• Waterloo, California
• Waterloo, Georgia
• Waterloo, Illinois
• Waterloo, Indiana
• Waterloo, Iowa
• Waterloo, Kansas
• Waterloo, Kentucky
• Waterloo, Louisiana
• Waterloo, Maryland
• Waterloo, Michigan
• Waterloo, Missouri
• Waterloo, Montana
• Waterloo, Nebraska
• Waterloo, New Hampshire
• Waterloo, New Jersey
• Waterloo, New Mexico
• Waterloo (village), New York
• Waterloo (town), New York
• Waterloo, Oregon
• Waterloo, Pennsylvania
• Waterloo, South Carolina
• Waterloo, Tennessee
• Waterloo, Texas (former name for Austin, Texas)
• Waterloo, Clarke County, Virginia
• Waterloo, Fauquier County, Virginia
• Waterloo, West Virginia
• Waterloo, Wisconsin