Dr. István Ries (14 November 1885 – 15 September 1950) was a Hungarian politician and jurist, who served as Minister of Justice between 1945 and 1950, during the transition period to the communism in Hungary.

He was born into a wealthy Jewish family in Küngös, which located in Veszprém County.

His father, Bernát was a land tenant and migrated to the Roman Catholic during István's young age.

During his lawyer's activity he protected the persecuted members of the labour movement and published articles for the Népszava and Szocializmus at several times.

During his ministership the suspects of the 1942 raid in Novi Sad were consigned illegally to the authorities of Yugoslavia in 1946, but he did not take part in the working out of the show trials because he was being restored.

The document has been described as "a slavish imitation of the Soviet-type constitutions, with some variations resulting from the historical and political differences between the Soviet Union and Hungary".

The regime wanted to sentence him in the Árpád Szakasits trial but before the case he was killed in the Vác prison by thugs of Gyula Princz.

Miklós Bauer, a member of the State Protection Authority also participated in Ries' torture.

According to his memorandum he tried to increase the politician's humiliation before the interrogation with "scolding, spitting and some slaps".