There are at least 12 cities named Waterloo in the entire world. The following map and table contain general information about these cities.
| # | Country | Region | City | Coordinates |
|---|---|---|---|---|
| 1 | United States | California | Waterloo | 38.035, -121.187 |
| 2 | United States | Nebraska | Waterloo | 41.287, -96.286 |
| 3 | United States | Iowa | Waterloo | 42.493, -92.343 |
| 4 | United States | Illinois | Waterloo | 38.336, -90.15 |
| 5 | United States | Wisconsin | Waterloo | 43.184, -88.988 |
| 6 | United States | Indiana | Waterloo | 41.432, -85.02 |
| 7 | Canada | Ontario | Waterloo | 43.467, -80.516 |
| 8 | United States | New York | Waterloo | 42.905, -76.863 |
| 9 | Canada | Quebec | Waterloo | 45.35, -72.516 |
| 10 | Sierra Leone | Western Area | Waterloo | 8.339, -13.071 |
| 11 | United Kingdom | England | Waterloo | 53.475, -3.03 |
| 12 | Belgium | Wallonia | Waterloo | 50.715, 4.399 |