Abstract: (Authenticity between Biography and Autobiography) The assumption of authenticity (synonymous here with verifiability) is a concept upon which the intention itself of writing a biography is built. The other forms of writings about one’s life, such as autobiography or diary, are based upon the same concept of authenticity, these expositions being perceived in a particular complementarity with biographical writing. Authenticity also has an element of value to it which is specifically implied when it comes to both biographical and autobiographical writing, and last but not least, this element of value is also still relevant in the large discussions about literature, about the literary truth (and meaning) and also about the viability of the writing act in itself. The questions that occur from these raw observations are related to the nature of authenticity and its ultimate scope. On the same note, considering the two forms of writing, biography and autobiography, a conceptual reconfiguration of authenticity is necessary having in mind the peculiarities of both typologies. In short, the significance and, implicitly, the assumptions of authenticity suffer metamorphoses depending on the perspective from which the text is written, this being the reason why a revaluation of this manner of perception is necessary when it comes to the concept of authenticity. The purpose of this paper is that of analysing the manner in which the concept of authenticity manifests itself in biographical writing, respectively in the autobiographical writing. Along the same lines, the purpose of this paper also involves the theme of the tendency to fictionalize the process of confession, theme which appears in the same discussions about authenticity.