Sclayn (French pronunciation: [sklaɛ̃]; Walloon: Scleyin) is a town of Wallonia and a district of the municipality of Andenne, located in the province of Namur, Belgium.

Sclayn developed around the collegiate church dedicated to Saint Maurice.

The church was founded by monks from Kornelimünster Abbey around 1072, and a college of canons was founded here by Emperor Henry IV in 1106.

The Romanesque church is still preserved in the town, and contains a large crucifix from the 14th century, among other historical furnishings.

This Namur Province location article is a stub.