The aim of this study was to determine the ways in which academic libraries in South Africa use community engagement as a strategy to advance the United Nations’ Sustainable Development Goals – specifically Sustainable Development Goals 8 and 11 – in the context of the study. It followed a multi-methods approach to interview and hold focus group discussions with heads of libraries and librarians, respectively, in South African public university libraries. It was found that the libraries advance these Sustainable Development Goals in various ways, such as by employing library student assistants and interns from different backgrounds, and by serving as employers themselves. Furthermore, the libraries serve as custodians of local culture and heritage by curating, digitising and preserving local collections for posterity. However, collaborative efforts between the libraries and other heritage institutions, such as museums, archives and galleries, are few and far between, which is deemed a missed opportunity for more meaningful cultural and heritage impacts for these institutions. More collaborations and partnerships between these institutions are recommended, especially with regard to the digitisation of cultural heritage collections. Therefore, a clarion call is made for libraries to think more expansively about their role and consider including sustainable thinking as part of their mission in line with the American Library Association. The results demonstrate that libraries are uniquely positioned to advance the Sustainable Development Goals.