EXAT 51 (the abbreviation of Experimental Studio) was a group of painters and architects active in Zagreb from 1950 to 1956. Members of the group included the architects: Bernardo Bernardi, Zdravko Bregovac, Zvonimir Radic, Bozidar Rašica, Vjenceslav Richter, Vladimir Zarahović, and the painters Vlado Kristl, Ivan Picelj i Aleksandar Srnec.
EXAT 51 advocated abstract art, contemporary visual communication and the synthesis of all disciplines of artistic creativity, contemporarily termed "total design". During the post-war period, when socialist realism represented official art, members of EXAT51 took a brave and dangerous stance. The group and its activities benefited from Yugoslavia's break with the Soviet Union and the rejection of the Informbiro resolution by Tito.