The Olsen Nauen Bell Foundry (Norwegian: Olsen Nauen Klokkestøperi) is a Norwegian bell foundry located in the municipality of Tønsberg.
[1][3] The company is based at the Nauen farm in Sem[4] and is Norway's only bell foundry.
Examples of carillons cast by Olsen Nauen include the ones in Oslo City Hall,[6] Oslo Cathedral,[6] Sem Town Hall in Tønsberg, and Trinity Church in Arendal.
[7] The Nauen farm also has a small museum with a display of old and new bells.
[1][3] In 2007, his father Ole Christian Olsen Nauen was awarded the King's Medal of Merit in gold for his activity.