Josif Kostic (13 August 1877 – 1960) was a Serbian politician and army general and one of the most prominent officers the secret military organization, the White Hand prior to and during World War II.In 1912 Kostic joined the White Hand, fought in World War I, and in 1930 he was promoted to Army General.
He was a staunch monarchist, and in World War II collaborated with the Nazis and was appointed as Minister of Postal and Telegraph Affairs of the Reich controlled Government of National Salvation.
In 1944, when the government fell to the communist Yugoslav and Soviet forces, Kostic and several other ministers and collaborators fled to Vienna, and he eventually settled in Switzerland, where he died in 1960.