Ethicists and social scientists alike have advocated for the inclusion of vulnerable populations in research and decision-making on climate engineering. Unfortunately, there have been few efforts to do so. The research presented in this paper was designed to build knowledge about how vulnerable populations think about climate engineering. The goal of this manuscript is to bring the ethics literature on climate engineering into dialogue with emerging social science data documenting the perspectives of vulnerable populations. The results indicate some concerns among vulnerable populations may resemble those outlined by ethicists. However, the perspectives expressed by interviewees also extend previous ethical treatments by indicating ways in which climate engineering could compound existing injustices.