Two rich knowledge domains have been evolving along parallel pathways in tourism studies: sustainable tourism (ST) and community-based tourism (CBT). Within both lie diverse definitions, principles, criteria, critical success factors and benefits sought or outcomes desired, advocated by different stakeholders ranging from quasi-governmental and non-profit organizations to public-private sector and academic interests. This poses significant challenges to those interested in theory building, research and practice in the sustainable development and management of tourism. The paper builds on a previous article published in Sustainability by presenting an integrated framework based on a comprehensive, in-depth review and analysis of the tourism-related literature. The study reveals not just common ground and differences that might be anticipated, but also important sustainability dimensions that are lagging or require much greater attention, such as equity, justice, ethical and governance issues. A preliminary framework of “sustainable community-based tourism” (SCBT) is forwarded that attempts to bridge the disparate literature on ST and CBT. Critical directions forward are offered to progress research and sustainability-oriented practices towards more effective development and management of tourism in the 21st century.