This page lists historical and other events on December 12th in Catalonia and the Catalan-speaking countries as well as festivals and a list of births and deaths of well-known Catalans.
1889 - Barcelona: Catalan engineer Francesc Bonet i Dalmau patents automobile powered by combustion engine, which was known as the Bonet.
1745 - Barcelona: Ignasi Lacaba i Vila, surgeon and surgery professor in Madrid.
1812 - Quartell, Camp de Morvedre: José Polo de Bernabé y Borrás, Valencian politician and businessman (died 1889).
1950 - València: Francis Montesinos, Valencian fashion designer.
1976 - Elx, Baix Vinalopó: Diana Palazón, Valencian actress.
1972 - Sabadell: Esteve Maria Relat i Corominas, doctor and mayor of Sabadell from 1923 to 1930.
1989 - Barcelona: Carlos Barral i Agesta, Catalan publisher, politician and author, who wrote in Spanish (n. 1928).
2007 - Barcelona: Josep Guinovart, Catalan painter, illustrator and printer, considered one of the best representatives of informalism.