This book focuses on the role of subsistence entrepreneurs in creating social and sustainable business opportunities on the global marketplace. Subsistence entrepreneurs use scarce resources to create new business opportunities, often in developing or emerging economies. In addition, subsistence entrepreneurship is increasingly being used as a way to facilitate market entry for small and medium-sized business enterprises that focus on collaborative innovation. The interdisciplinary contributions gathered here will expand readers' understanding of the nature and characteristics of subsistence entrepreneurs, as well as the challenges they face. The central connection between subsistence, sustainability and social entrepreneurship is also explored.