It has been suggested that unconditional respect for persons, i.e. respect that is due to everyone simply as a function of their being persons, is the most fundamental kind of respect. Showing unconditional respect towards someone involves recognizing their integrity as a person and their status as an autonomous rational actor. This idea is a cornerstone of much moral, social and political theory. While the idea implicitly underlies some contemporary psychological work on respect, for the most part this fundamental moral orientation has been neglected in psychology. The concept needs clear explication and measurement if its explanatory and predictive value is to be fully realised. This paper will explore the concept of unconditional respect, describe a scale for measuring individual differences in this attitude, and then go on to position unconditional respect, both conceptually and empirically, amongst other relevant social psychological constructs such as Social Dominance Orientation, Right-Wing Authoritarianism, Empathy and Perspective-taking. We then provide some evidence on, as well as speculation about, the role of unconditional respect in interpersonal and intergroup relations.