Autism Spectrum Disorder (ASD) is a neurodevelopmental condition characterized by social/communicative difficulties and perseverative behaviours. While research on autism has flourished recently, few studies have been conducted on the disorder in non-Western contexts. In low- and middle-income countries (LMICs), biomedical research on autism is required to better understand the needs of the population and to develop contextually appropriate interventions. However, autistic individuals are a vulnerable study population and LMICs present with various considerations. While the presentation of autism is heterogeneous, stigma is a common social consequence affecting research. Drawing specifically on the South African context, the ethical intersections of these issues are discussed, along with the limitations of the current informed consent process. Community engagement is recommended as an adjunct to informed consent to ensure that biomedical research is conducted in a more inclusive way. Practical pointers are provided for implementing systematic support for conducting community engagement alongside biomedical research.