This work addresses the imbrication between ‘insurrectional anarchism’ and the thinking of life as ‘savage ontology’ identified by Foucault. Insurrectional anarchism is that “strain” of anarchist thought that dictates the rejection of existing organisations, uncompromising negation, and the immediate destruction of all external forms of power and control in violent insurrection. I link this to Foucault’s positing of a ‘savage ontology of life’, in which “Life” exceeds and erodes all forms of constraint and representation. Tracing through classical insurrectionary anarchism – Bakunin, Stirner, and Novatore – I explore the convergence of this post- and anti-Hegelian thinking with contemporary theory, especially the work of Deleuze. While this kind of thinking gains its revolutionary and theoretical élan through its disregard for the forms of capitalist and State power, I argue that hymning “Life,” qua destructive and excessive force, does not so much challenge the fundamental tenets of capitalism as risk replicating the molten core of its own contradictory ideology.