| Erik Molnár | |
| Order1: | Minister of Foreign Affairs of Hungary |
| Term Start1: | 24 September 1947 |
| Term End1: | 5 August 1948 |
| Predecessor1: | Ernő Mihályfi |
| Successor1: | László Rajk |
| Term Start2: | 14 November 1952 |
| Term End2: | 4 July 1953 |
| Predecessor2: | Károly Kiss |
| Successor2: | János Boldóczki |
| Birth Date: | 16 December 1894 |
| Birth Place: | Újvidék (Novi Sad), Bács-Bodrog County, Austria-Hungary (today Serbia) |
| Death Place: | Budapest, People's Republic of Hungary |
| Profession: | politician, economist, historian |
| Party: | MKP, MDP, MSZMP |
| Parents: | Aladár Molnár Jolán Jeszenszky |
Erik Molnár (16 December 1894 – 8 August 1966) was a Hungarian communist politician, lawyer, economist and philosopher who served as Minister of Foreign Affairs twice: from 1947 to 1948 and from 1952 to 1953.
During the First World War he fought at the Eastern Front and was captured by the Russians. As a prisoner of war, Molnár met with the communist ideas in a prisoner-of-war camp in Far East Asia. Later he returned to home and finished his legal studies. After that, he joined the illegal Hungarian Communist Party and worked alongside his younger brother, René. He published a lot of articles for the illegal communist newspapers (Gondolat, Társadalmi Szemle, Korunk).
In the Interim National Government he served as Minister of Welfare (1944–1945). Later he was appointed Minister of Information and Minister of Foreign Affairs (1947–1948). Then he was the Hungarian ambassador to the Soviet Union (1948–1949), and later he worked as Minister of Justice (1950–1952). He was Minister of Foreign Affairs again between 1952 and 1953. He was the President of the Supreme Court of Hungary between 1953 and 1954, and was later appointed as Minister of Justice again (1954–1956).
He was a member of the assembly from 1944 until his death, and also a member of the communist party's Central Committee. Molnár played a big role in the management of the history research as member of the Hungarian Academy of Sciences's history institute and as chairman of the Hungarian Historical Society. He dealt with the problems of the Hungarian social development thoroughly, first of all with the land question. He applied Marxism-Leninism principles to Hungarian affairs. During the Second World War, bigger studies appeared about the Árpád era's society. After 1945, Molnár dealt with the Hungarian prehistory and the feudalism with the questions of age social history, the ideological antecedents of the historical materialism and with his philosophical basis problems, the questions of the contemporary capitalism, dealt with the development of the nationalism and its development furthermore.