Adolescents with ASD face challenges in forming positive friendships due to their ASD condition. This study developed a social networking platform based on the needs of a small group of ASD adolescents and their parents/carers and examined what potential benefits such a system could provide. We conducted seven co-design workshops with six adolescents with ASD over eight months. The team exchanged ideas and communicated through group discussions and drawings. The findings suggest that: (1) participants demonstrated self-advocacy skills through an iterative co-design process; (2) a safe and familiar environment encourages active participation from adolescents with ASD as co-designers; and (3) parents, community group and fellow participants play a pivotal role in engaging adolescents with ASD on a social-network.