Castelluccio - Castelluccio
- Castelluccio dei Sauri, municipality of the province of Foggia
- Castelluccio Inferiore, municipality of the province of Power
- Castelluccio Superiore, municipality of the province of Potenza
- Castelluccio Valmaggiore, municipality in the province of Foggia
- Castelluccio, a suppressed municipality in the province of Potenza
- Castelluccio Acqua Borrana, ancient name of the municipality of Castelmauro in the province of Campobasso
- Castelluccio, part of the municipality of Castel San Giorgio in the province of Salerno
- Castelluccio, part of the municipality of Norcia in the province of Perugia
- Castelluccio, part of the municipality of Pescorocchiano in the province of Rieti
- Castelluccio, part of the municipality of Porretta Terme in the metropolitan city of Bologna
- Castelluccio Cosentino, part of the municipality of Sicignano degli Alburni in the province of Salerno
- Castelluccio rocks, island of the Sicily, belonging to the municipality of Syracuse
- Castelluccio of Noto, archaeological site of Sicily, from which the so-called Culture of Castelluccio is taken