Ivan Pernar (3 November 1889 – 2 April 1967) was a Croatian politician of the Croatian Peasant Party (CPP, Hrvatska Seljacka Stranka).
He was a member of the National Assembly of the Kingdom of Serbs, Croats and Slovenes.
On 20 June 1928 Pernar was one of several Croatian Peasant Party representatives shot at by People's Radical Party representative Puniša Racic.
While Pernar recovered from the gunshot, CPP leader Stjepan Radic died from the wounds suffered in the attack.
During the subsequent January 6th Dictatorship Pernar was jailed in Sremska Mitrovica for 3 years.
Pernar was later selected as a senator for the Banovina of Croatia.
In 1945 he emigrated to the United States of America where he remained until his death in 1967.
An eponymous politician Ivan Pernar in contemporary Croatia, is his relative, being his grandnephew.