The main purpose of this paper is to explore and analyze the contributions that publicprivate partnerships and public policy have made in the development of tourism in the Caribbean as tools for enhancing competitiveness in the Caribbean tourism industry. The paper explores these contributions mainly in the context of the upgrading strategies that Caribbean countries have pursued over the past 15 years or so and using the lens of the tourism value chain and tourism cluster approach. The paper also analyzes the potential roles that public-private partnerships and public policy will continue to play in the future especially in the process of building linkages between the tourism sector and other sectors in order to increase net benefits from tourism to the Region. This paper is divided into five sections. In Section I, we define public-private partnerships (PPP) and describe the areas in tourism where PPP are most widely used, the tools used to implement PPP in tourism and the various forms of PPP. Economic arguments are then laid to motivate PPP as a determinant of tourism competitiveness using the tourism value-chain and tourism cluster approach. Specific case examples illustrating the contributions of PPP and public policy towards increasing tourism competitiveness are provided at a regional level and for specific areas in Sections II and III respectively. Section IV summarizes findings from the previous two sections and discusses ways to enhance the effectiveness of PPP and public policy in Caribbean tourism for increased competitiveness. Section V analyzes a few of the challenges that the Caribbean tourism sector is facing. The final section proposes new areas of intervention for PPP and public policy as tools for enhancing competitiveness in the Caribbean tourism sector in order to assist the region in addressing these challenges.