ABSTRACT For many decades, historians, researchers, and participants have documented the history of the nuclear era in the Pacific Islands. They have highlighted the legacy of health and environmental impacts of 50 years of nuclear testing by the United States, the United Kingdom, and France between 1946 and 1996. Most official histories of Pacific nuclear testing present extensive technical detail of the development of nuclear weapons, evidence of inter-departmental rivalries, and vivid portraits of the scientists who built the Bomb. This state-sponsored literature, however, makes limited reference to the lived experience of the civilian and military personnel who staffed the test sites, or the Indigenous peoples whose land and waters were used for the testing programmes in Oceania. Despite a growing international literature on the health and environmental impacts of nuclear testing, the history of Pacific Islander resistance to the nuclear testing programmes is more fragmentary. In response, the authors in this special issue have foregrounded the agency of Indigenous activists, rather than the Western allies who campaigned alongside the Nuclear Free and Independent Pacific (NFIP) movement. Their contributions add to a growing body of personal testimony by Indigenous nuclear survivors and resisters from around Oceania. This special issue includes a 1954 petition from Marshall Islanders to the UN Trusteeship Council, an example of the protests by Islanders that began in the 1950s, pre-dating the rise of the wider NFIP movement in the 1970s. Other articles highlight Fiji’s early foreign policy and the importance of the debate over nuclear testing in the formation of the South Pacific Forum; the importance of culture in Pacific anti-nuclear activism, through song, poetry, graphic design, and community theatre; the role of the regional NFIP movement in linking local struggles to the wider regional context, through pan-Pacific, Indigenous-led activism around self-determination; and connections between the NFIP movement and solidarity movements in the Global North.