This thesis presents a public relations perspective of the sharing economy by exploring how three prominent sharing economy companies, Airbnb, Uber and TaskRabbit, communicate to form a relationship with key stakeholders, including customers and service providers. Employing a qualitative, thematic analysis, this study analyzed each company's website communication and found the relationship qualities of social trust, safety and support to be prominent elements of relationships communicated by each company. Serving as one of the only public relations studies to address the sharing economy, this thesis extends relationship management theory's application to a new socioeconomic movement and situates current sharing economy research in a new context of public relations. This study provides important communication insights for organizations in the sharing economy that rely on strong organization-public relationships in order to be successful, and it unites public relations and sharing economy research.