Mosteiros is a civil parish in the municipality of Ponta Delgada in the Azores. The population in 2001 was 1196, its density is 130/km² and the area is 9.2 km². It is located in the northwestern part of the island of São Miguel and is connected by roads to Ponta Delgada in the south and Ribeira Grande in the east. The mountains which are covered with lovely trees are to the east and a mountain range is situated in the southeast about 1 km away from the Atlantic Ocean.

The village is aligned from north to south with the major road link to Ponta Delgada and Ribeira Grande. The local agriculture is dominated by cattle farming, with some fruits and vegetables. Many of the hedges are made of bamboo. Another village with a cape lies to the southwest. Another cape is to the north which has a number of farms. The coastline of the parish is surrounded by rocks elevating up to 20 m.

There are two small islets to the northwest and three in the southwest including a large one further west and two smaller ones slightly east of the large islet. The word Mosteiros actually means "monastery" in the Portuguese language and the parish was named as such because the largest of these islets is shaped like a church.

Mosteiros has a school, a lyceum and a square (praça).