This article proposes to retrace the path of trust that Paul Ricœur has drawn across his works. If the concept of trust is never themed as such, nevertheless it unfolds in subtle ways in fields as diverse as ethics, morality, politics, and religion. We will argue that trust is a solid but fragile foundation for Ricœur’s recognition theory. Rooted in man’s structural disproportion, trust is a perpetual tension between the finitude of existence and the infinitude of mutual recognition, between the ability and fallibility of the human being -it is thus a continuous search, always disappointing but always renewed, of a mediation between the self and the other, the hope of happiness and the reality of evil. The analysis of various forms of trust, including interpersonal and institutional forms, will then be coupled with a study of trust in practical terms, based on Ricœur’s approach to healthcare relationships, or the perception of foreigners.