Purpose: In order to provide equitable communication intervention and support services to clients from diverse cultural and linguistic backgrounds, the development of languagespecific resources for assessment and intervention is needed. The purpose of the study was to develop a core vocabulary list based on language samples from Sepedi-speaking children, in order to make it available as a resource to inform vocabulary selection for augmentative and alternative communication (AAC) systems for children in need of AAC from a Sepedi language background. Method: The speech of six typically developing Sepedi-speaking children aged 5 -6 years was recorded using small body-worn audio recording devices. Children were recorded during their regular preschool day. The recordings were transcribed, coded and analysed.