János Radványi

János Radványi (4 August 1922 – 11 January 2016) was a Hungarian diplomat who became an American political scientist and academic professor. He served as Hungarian Ambassador to the United States between 1962 and 1967. He became an American citizen in 1978. He taught at Mississippi State University (MSU). He was born in Budapest.

Radványi died after a long illness on 11 January 2016, aged 93.