Liberalism and Marxism are two of the most influential ideologies of the modern era. Generally analyzed in the context of their criticisms of one another, they are rarely examined through the lens of revolutionary thought and action. Both ideologies have a clear interpretation of revolution, and both are fundamentally revolutionary, both in origin and in outlook. This paper will examine how liberal and Marxist ideology shaped how revolution was understood by their respective adherents, and how that understanding contributed to the success or failure of their revolutionary movements to create lasting polities that adhered to their ideological principles.