While high fertility levels in sub-Saharan Africa pose multiple challenges for economic, social, and environmental prospects, the perspectives of actors from this region have not been well documented. We offer a selection of viewpoints from 42 countries in sub-Saharan Africa along four main dimensions: perceptions of the role of population growth for broader societal implications; the representation of sub-Saharan Africa in discussions of population growth; the integration of population dynamics and reproductive health and rights in environmental considerations and instruments; and the sensitive nature of the topic of population growth. A mixed-methods qualitative project was conducted, using an online survey of 402 participants followed by 18 in-depth interviews, to collect the views of policy makers, researchers, and activists in sub-Saharan Africa. We find overwhelming agreement that population growth has negative implications for environmental sustainability and other social welfare outcomes. We find broad support for the integration of population dynamics and reproductive health and rights dimensions at international environmental meetings and in environmental sustainability instruments. Participants also stressed the under-representation of sub-Saharan Africa in discussions of population dynamics and in international environmental governance. Overall, this paper contributes to a better understanding of sub-Saharan African perspectives and attitudes on the interconnectedness of reproductive health, population dynamics, and environmental sustainability.