Constantin Vișoianu (4 February 1897 – 3 January 1994) was a Romanian jurist, diplomat, and politician, who served as Minister of Foreign Affairs at the end of World War II.

[2][3] On 25 May 1944, he presented an amended proposal for armistice terms, drawn by a committee consisting of Ghiță Popp [ro] and Ioan Hudiță (PNȚ), Bebe Brătianu and C. Zamfirescu (PNL), Ștefan Voitec and Iosif Jumanca (PSD), Petre Constantinescu-Iași and Vasile Bâgu (PCR).

At the beginning of 1945, Vișoianu transferred to his associate Alexandru Cretzianu [ro] 6 million Swiss francs from an account previously constituted in Switzerland by the Antonescu government.

[1] At the November 1947 trial of National Peasants' Party leading figures such as Maniu and Ion Mihalache, Vișoianu was sentenced in absentia by the Military Tribunal of the Second Region of Bucharest to 15 years of forced labor.

[1][2] In that role (which he held until the committee was dissolved in 1975), Vișoianu would send messages to the Romanians in the country, read on the BBC World Service, Voice of America, and Radio Free Europe.