Joan-Josep Tharrats i Vidal (5 March 1918 in Girona – 4 July 2001 in Barcelona)[1] was a Catalan painter, art theorist and publisher.

His initial style was akin to Impressionism but moved into abstraction as the influence of Piet Mondrian and Wassily Kandinsky became more important to him.

His style evolved from lineal abstraction influenced by surrealism (during his Dau al Set years) towards Art Informel working with texture, color and graphism.

His work also includes a variety of posters, books, murals, stained glass, mosaics, jewelry and opera scenography.

In 2000, Tharrats himself collaborated with monumental and small oil paintings in his last exhibition which was organized by Galeria Taüll of Barcelona.