Castello
- Castell (disambiguation)
- Castella (disambiguation)
- Castelli (disambiguation)
- Castello (surname)
- Castello cheeses
- Castello, Hong Kong
- Castello, Venice
- Castells (disambiguation)
- Castelló, Valencia
- Castellón (disambiguation)
- Castellón de la Plana
- Cittadella (Gozo)
- Città di Castello
- Florence
- Giudicato of Cagliari
- Monteggio
- Municipalities of San Marino
- Roman Catholic Diocese of Castello