This page lists historical and other events on December 18th in Catalonia and the Catalan-speaking countries as well as festivals and a list of births and deaths of well-known Catalans.
1535 - Hayreddin Barbarossa (Red Beard) leads the sacking of Mahon on the island of Menorca.
1913 - Madrid: A Spanish government decree allowing a region to unite its diputations is passed and this serves as the legal basis for the creation of the Mancomunitat de Catalunya.
1979 - Catalonia: The Statute of Autonomy, known as the Estatut de Sau, becomes law when King Juan Carlos I approves the organic law of the Estatut d'Autonomia de Catalunya (Llei Orgànica 4/1979, 18th December).
1989 - The Assemblea Constituent de Catalunya Lliure, impulsed by PSAN, is held.
1840 - Arecibo, Puerto Rico: Josep Coll i Britapaja, composer, especially of sarsuelas.
1956 - Mataró, Maresme: Jordi Bosch i Palacios, Catalan actor.
1971 - Barcelona: Arantxa Sánchez Vicario, Catalan professional tennis player.
2004 - Barcelona: Josep Romeu i Figueras, Catalan poet and literary critic (born 1917).
2000 - Zarautz, Basque Country: Luis Claramunt, Catalan painter, illustrator and engraver.