Guimiliau (French pronunciation: [ɡimiljo]; Breton: Gwimilio) is a commune in the Finistère department of Brittany in north-western France.

Parish closes are a distinctive feature of Breton culture in the historic Léon diocese, in which Guimiliau stands.

Parish closes today form the foci for pardons, the annual Breton pilgrimage festivals, which can attract thousands of worshippers.

The calvary or crucifix is the centre piece of the church yard, surrounded by a fine and complex retelling of the Passion in statuary.

See Calvary at Guimiliau The church contains many fine examples of polychrome sculpture from the sixteenth century onwards, including several large retables.