Against the background of South Africa’s ‘official’ policy of multilingualism, this study explores some of the socio-cultural dynamics of English as a lingua franca (ELF) in relation to how cosmopolitanism is understood in South Africa. More specifically, it looks at the link between ELF and cosmopolitanism in higher education. In 2016, students at Stellenbosch University (SU) triggered a language policy change that enacted English (as opposed to Afrikaans) as the primary medium of teaching and learning. English has won recognition as (...) the academic lingua franca for at least two socio-political reasons: First, English is considered more ‘neutral’ than Afrikaans (which continues to be strongly associated with Afrikanerdom), and second, English is arguably associated with cosmopolitanism and an international institutional status. Despite English being the academic lingua franca, it continues to be caught in an ambivalent climate with tensions among policy planners, language practitioners, higher education managers, academic staff and students. Ultimately, this paper argues that ambiguity is one of the most defining features of English in South Africa and that a complex range of Cosmopolitan, Afropolitan and glocal African identity trajectories reflect the power dynamics of English in the country. (shrink)