Josep Maria Castellet i Díaz de Cossío (Barcelona, 1926-2014) was a writer, literary critic and publisher. He is known for being the literary editor at Edicions 62. He was President of Grup 62.
His collection at the Biblioteca de Catalunya comprises his private library.
Who is who (Institució de les Lletres Catalanes)
Josep Maria Castellet collection at the Biblioteca de Catalunya