Ivan Katardžiev (Bulgarian: Иван Катарджиев; Macedonian: Иван Катарџиев) (January 6, 1926 – December 1, 2018) was a Macedonian historian. He was regarded as the country's most important expert on the Internal Macedonian Revolutionary Organization and the Macedonian history under Yugoslavia as well as the early years of independence. He was also director of the Institute for National History.
In the 1950s he was head of the University Library of Skopje, the Diaspora Office and served as secretary of the Institute for National History of Macedonia.
In recent years Katardžiev criticized the then Macedonian ruling party, the VMRO – DPMNE, for rehabilitating several Ottoman-era revolutionaries, who had previously been blacklisted during Yugoslav rule for being Bulgarophiles.
In October 2014 the Lustration Commission of Macedonia named Katardžiev as an informer of the Communist Yugoslavia's UDBA during the 1950s. They accused him of spying on history students who originated from Bulgarian Macedonia. Katardžiev at the time was head of the University Library in Skopje as well as the Diaspora Office. Katardžiev denied the claims, and said he was pressured himself by the police between 1955 and 1960.
- The Serres District from the Kresna Uprising to the Young Turks Revolution (1968)
- Time of the Maturation: The Macedonian National Question between the Two World Wars, 1919–1930 (1977)
- The Struggle for the Development and Affirmation of the Macedonian Nation (1981)
- Dimitar Bechev (13 April 2009). Historical Dictionary of the Republic of Macedonia. Scarecrow Press. pp. 114–. ISBN 978-0-8108-6295-1.
- Sinisa Jakov Marusic (15 October 2014). "Macedonia Names Top Historian as Communist Informer". Balkan Insight. Retrieved 16 February 2015.
- Почина академик Иван Катарџиев, врвен научник за Македонската историја (in Macedonian)