Hyperintensionality Iliana Gioulatou Abstract: In the current thesis I examine the literature in hopes of arriving at a good, hyperintensional theory of content. A good theory of content, it is argued, is one that can draw certain hyperintensional distinctions, but of course, achieving a certain finess of grain does not, on its own, a good theory make. With these criteria in mind, I critically engage with the literature, and in particular with structured propositions accounts, extended possible world semantics, truthmaker semantics à la Stephen Yablo, and truthmaker semantics à la Kit Fine. I notice that there are two axes along which hyperintensionality runs – that of the impossible and that of aboutness – and the better theories are found, on the one hand, a possible-worlds based account born out of the works of Jago and Yablo combined, and Fine’s state-based truthmaker semantics on the other, the question of who takes the trophy home being a matter of perspective.