Pleugriffet (French pronunciation: [pløɡʁifɛt]; Breton: Ploueg-Grifed) is a commune in the Morbihan department of Brittany in north-western France. Inhabitants of Pleugriffet are called in French Pleugriffetois.

Pleugriffet is located 22 km (14 mi) northwest of Ploërmel, 23 km (14 mi) southeast of Pontivy and 36 km (22 mi) north of Vannes. The village belongs to upper Brittany. The commune is border by river Oust to the east. Apart from the village centre there are many hamlets in the commune.

From 1954, the present church was rebuilt following the plans of the architect Caubert. The church was consecrated on 12 August 1956 by bishop Eugène Le Bellec. It is a Neo-Byzantine style concrete building. It was built on the site of the old Romanesque church that it replaces.