Social support has been found to be widely used and critical during early venture creation. Much research has indicated that nascent ventures benefit from the entrepreneur´ social ties and actual receipt of support from others. Far less attention has been paid on the entrepreneur´s perception of social support and how this perception influences venture formation processes. The lack of research on entrepreneurs´ perceived social support is surprising given that perceived social support is such a prominent concept in the social support literature in various fields. Drawing from the social support literature and social cognitive theory, we fill this gap by examining the relationship between nascent entrepreneurs´ perception of social support and venture emergence and the mediating role of entrepreneurial self-efficacy on this relationship.