Palingenetic ultranationalism is a definition of "true fascism" proposed by political theorist Roger Griffin. The phrase was first coined by Griffin in his 1991 book The Nature of Fascism. A key element is the belief that fascism can be defined by what Griffin posits in his book to be the true core myth of fascism, namely that of the need for a social revolution to occur first before a "national rebirth", palingenesis, could then take place.
Griffin argues that the unique synthesis of palingenesis, populism and ultranationalism differentiates fascism from para-fascism and other authoritarian, nationalist ideologies. He asserts that this is the "fascist minimum" without which, according to his definition, there can be no "true fascism". Griffin himself describes fascism as a political philosophy built on the "perverse mythic logic" of destruction, which the fascist believes will then be followed by some form of political rebirth.