This volume is the first to explore transnational anticolonialism as a general global phenomenon that spanned the entire twentieth century. Its collected essays model both a broadening of the issues under consideration and the collaboration necessary to do justice to the scope of this vibrant field. They showcase new work by scholars who explore the anticolonial transnational in multiple geographical regions, from a variety of perspectives, and at many different times across the long twentieth century. Revealing that anticolonial movements everywhere in this period were invariably transnational in terms of their imaginaries, mobilities, and networks, these essays also demonstrate that centering transnational connections can change our understanding of the anticolonial past. The legacies of transnational anticolonial strategies and networks fundamentally shaped the present. Together, these essays present a fresh, kaleidoscopic view of the geographical, chronological, and thematic possibilities of the global anticolonial transnational.