This book weaves together theories of pre-Columbian trans-Pacific contact between Oceania and the Americas and analyses them from a history of ideas perspective. Despite limited factual evidence, trans-Pacific contact theories between the Americas and Oceania have been discussed in various forms since the sixteenth century and remain a persistent trope. To provide a context for the history of ideas of trans-Pacific contact involving the Americas and Oceania, this book addresses the changing conceptions of the Pacific according to scholars from Europe and the Americas, the development of science and later anthropology and archaeology in this region and in the Americas, and the growing understanding of the history of settlement of the Americas and the Pacific. This book covers views predominantly from the Global South, making them more accessible to an Anglophone audience worldwide.