Mapping the landscape of STEM promotion by means of Olympiads and competitions is an important step towards the expansion of such interventions. This report provides such a mapping, based on the responses of thirteen participating organisations. It shows which organisations are involved in the promotion of STEMI Olympiads and competitions in South Africa, the size and scope of the Olympiads and competitions including the targeted schools, learners, their subject content, the types of activities involved, and the incentives and rewards offered to participants. It does so against the background of the various learning outcomes and benefits of participation for learners, while also considering the challenges encountered by the organisations and their strategies on how to increase the number of participants.