Portugal
- São Nicolau (Lisbon), a parish of the municipality of Lisbon
- São Nicolau (Porto), a parish of the municipality of Porto
- São Nicolau (Marco de Canaveses), a parish of the municipality of Marco de Canaveses
- São Nicolau (Mesão Frio), a parish of the municipality of Mesão Frio
- São Nicolau (Santarém), a parish of the municipality of Santarém.
Read more about this topic: São Nicolau