| HAMILTON’s TWIN CITIES | ||
| City | Country | Year |
| Shawinigan, Québec | Canada | 1958 |
| Kaga | Japan | 1968 |
| Mangalore | India | 1968 |
| Fukuyama | Japan | 1975 |
| Racalmuto, Sicily | Italy | 1987 |
| Ma’Anshan, Anhui | China | 1987 |
| Flint, Michigan | USA | 1987 |
| Sarasota, Florida | USA | 1991 |
| Valle Peligna, Abruzzo | Italy | 1991 |
| Monterrey | Mexico | 1993 |
