Porto Moniz is a municipality in the northwest corner of the island of Madeira. It is located west of Santana and Machico, and northwest of Funchal, linked to Santana and Funchal by a main roadway from Calheta.
Four parishes of Porto Moniz include:
- Achadas da Cruz – the smallest parish in population and area, sharing the highest parish definition with Ribeira da Janela;
- Porto Moniz – the largest parish by population (1700 inhabitants) and density (81/km²), it includes the settlement of Santa Maria Madalena and main settlement of Porto Moniz, which is located southeast of Ponta do Tristão, which is the northernmost point on the island (at 332 m above sea level)
- Ribeira da Janela – the smallest parish in density, but one of the two highest parishs in the municipality;
- Seixal – the largest parish by area.
Porto Moniz has a few schools, a few lyceums, a gymnasium, banks, a post office, a small port, beaches and squares or plazas (praças). It also has a large open-air swimming pool, which has been mostly formed out of natural rock pools.