Vlado Singer (born; 21 October 1908 – October 1943) was an Croatian politician and member of the Ustaše movement.
Singer was born in Virovitica on 21 October 1908 to a Croatian Jewish family. Later in life he converted to Catholic faith. He believed that for Jews in Croatia the only right way is total assimilation or identification with the Croatian national identity. Singer political activities began during his studies in Zagreb at the end of the 1920s and in early 1930s. He publicly led the University of Zagreb academics organized in the society called "Kvaternik". Singer with his colleagues, Branimir Jelić, Mladen Lorković and Dido Kvaternik, believed that the former political formations were dead and that a new movement which will be in charge of the revolutionary struggle needs to be created. On 6 March 1932 Singer organized a demonstration at the University of Zagreb against the dictatorship of Alexander I of Yugoslavia. In March 1933 he started and edited nationalist paper "Naša gruda" (Our land).
After only two published issues Singer was forced to exile in 1933. He moved to Vienna, Austria. In March 1934 he was arrested by the Austrian police at the request of the Yugoslav authorities in connection with an alleged assassination attempt of Petar Oreb against Alexander I of Yugoslavia. After six months he was released and moved to Italy. In Italy he resided in the Ustaša camps. Singer was again arrested after the assassination of Alexander I of Yugoslavia in Marseille, France. He was a commissioner of the supreme organ of Ustaša – Croatian Revolutionary Movement called "Glavni Ustaški stan" (Main Ustaša apartment) and was described as a skilled organizer. While in Italy, according to Eugen Dido Kvaternik, only Singer critically looked at Ante Pavelić's way of life, but remained loyal.
Singer returned to Zagreb in 1941 with Pavelić and other Ustaše members. In May that same year he started to lead personal department of the "Glavni Ustaški stan". In mid-June of 1941 Singer was named in charge of the Ustaše Surveillance Service (UNS) office. On 14 September 1941 members of the communist movement made diversion on Zagreb's main post office. At the Nazis request Singer was arrested as a responsible person. He was imprisoned in Jasenovac concentration camp. While in Jasenovac concentration camp Singer was detained with Vladko Maček. In October 1943, after two year imprisonment, Singer was killed in the Stara Gradiška concentration camp. Historians, writers and associates relate Singer's arrest and liquidation with his Jewish background and Vjekoslav Luburić personal intolerance towards him. Singer's liqudation was never resolved.