a term first coined by Jeffrey HerfReactionary Modernism: Some Ideological Origins of the Primacy of Politics in the Third Reich on JSTOR in the 1980s to describe the mixture of "great enthusiasm for modern technology with a rejection of the Enlightenment and the values and institutions of liberal democracy" that was characteristic of the German Conservative Revolutionary movement and Nazism.

Special Combat Aggressive Reactionary Systems is an American combat fighting system created by Jerry L. Peterson.

The Reactionary Mind: Conservatism from Edmund Burke to Sarah Palin is a 2011 book written by political theorist Corey Robin.