In their recent paper, “Practical Knowledge without Luminosity,” Bob Beddor and Carlotta Pavese (2022) claim that the doctrine of essentially intentional actions, or “essentialism,” is false. Essentialism states that some actions are essentially intentional, such that, “whenever they are performed, they are performed intentionally” (2022, p. 926). Beddor and Pavese work to reject essentialism, which figures as a key premise in Juan Piñeros Glasscock’s anti-luminosity argument against the knowledge condition for intentional action (Piñeros Glasscock, p. 1240). Historically, essentialism has received (...) little attention from philosophers since its inception in Elizabeth Anscombe’s Intention (2000, §47). However, I believe that essentially intentional actions can play an important role in an ontology of action. In my paper, I develop and argue for a variety of essentialism in the context of naive action theory, which I call naive essentialism. Naive essentialism is a two-fold thesis, which claims that (1) essentially intentional actions exist, and (2) that essentially intentional actions ground accidentally intentional actions. My paper has four parts. In the first part, I distinguish between essentially and accidentally intentional actions, and unpack the relevant principles of naive action theory. Second, I present the grounding thesis that accidentally intentional actions are grounded in essentially intentional actions. Next, I provide an argument for the existence of essentially intentional actions. Lastly, I briefly respond to a possible objection to my argument. The upshot of my arguments is that essentially intentional actions form the metaphysical and explanatory bedrock in a naive ontology of action, and that there are good reasons for accepting a key premise in Piñeros Glasscock’s anti-luminosity argument. (shrink)