匈牙利社会主义工人党
The party was established as the Hungarian Socialist Workers' Party on 17 December 1989 as a successor party of the Hungarian Socialist Workers' Party (MSZMP) by a small group of old MSZMP members who opposed its transformation into the Hungarian Socialist Party (MSZP). Among them was Károly Grósz, the last general secretary of the old MSZMP, who became the new party's acting chairman