The goal of this article is to understand the concept of poetry in the broad context of Heidegger’s “early” thought, around 1919 and 1930. To that end, we seek to disclose a relation that in Heidegger remains implicit and in the secondary literature absent. This is the relation between poetry and the ways of Being (existence, ready-to-hand, present-at-hand, etc.). Since Heidegger did not explicitly thematize poetry in this broad context, the setup of this article consists of three main steps, in (...) which we make explicit the implicit ontological notion of Heidegger about poetry and, we shall argue, the ontological status of the poeticized. First, we distinguish between the theoretical and the pre-theoretical dimensions of existence, which enable us to explain that for Heidegger poetry is a pre-theoretical letting-see of the various entities that we encounter in the immediate everyday life that is mostly overlooked because of their “self-evident” and “obvious” presence. In this first step we argue that for Heidegger poetry is partially an explicit ontic letting-see. Second, we address the ways of Being in order to secure the systematic horizon for our interpretation regarding the relationship between the ways of Being and poetry. Third, we discuss that an indicative and non-conceptual letting-see of pre-theoretical ways of Being takes place in poetry through the respective poetized entity. In the second and third steps, we exhibit that according to Heidegger poetry results ultimately in an implicit ontological letting-see of the ways of Being. (shrink)