Children and adolescents with autism commonly experience social communication impairments that can make it difficult for them to establish and maintain reciprocal friendships. Difficulty making or keeping friends can have a negative impact on a young person's academic achievements, social interactions, and emotional wellbeing. This paper aims to synthesise the available research on popular friendship-skill interventions to examine the common features of effective interventions and reveal elements that remain absent from the research. Most friendship-skill interventions for individuals with autism can be categorised as social skills training and peer-mediated instruction and interventions. Across these two intervention types, there are common features that contribute to their success, such as, the presence of peers, opportunities for skill generalisation, and the selection of target behaviours that consider the individual needs of the participant. However, research indicates an over reliance on modifying the behaviour of individuals without taking environmental supports into account. In addition, there remain some key omissions from the current body of literature that need to be addressed, including opportunities for generalisation, comparison of effects across ages and stages, and the inclusion of student voice.