This paper aims to come back to the concept of human dignity, in order to understand the significant role it has played in the context of various bioethical approaches.From a critical perspective, the notion of dignitywill be shown not to end on the human dimension, not to be exhausted in it, and not to belong exclusively to it. This text is made up of two sections and an epilogue: the first section points to the place the concept of human dignity occupies in the national and international legislation concerning bioethics, while the second one discusses a general characterization of the concept of human dignity from two sources and its relation to the notion of individual. As a conclusion, the epilogue presents several insights and quests on the concept of human dignity in the context of bioethics