Italy
- San Carlo Canavese
- Vanzone with San Carlo
- San Carlo, fraction of Closed Sclafani
- San Carlo, fraction of Sessa Aurunca
- San Carlo, fraction of San Vincenzo
- San Carlo, fraction of Cesena
- San Carlo (Monza district), neighborhood of Monza
- Borgo San Carlo, fraction of Ascoli Satriano
- San Carlo, fraction of Villa San Secondo
- San Carlo, fraction of Desio is Seregno
- San Carlo, fraction of Sant'Agostino (Italy)
- San Carlo, fraction of Terni
- San Carlo, neighborhood of Rezzato, province of Brescia
- San Carlo, fraction of Condofuri
Switzerland
- San Carlo, municipality of Val Bavona