Autism spectrum disorder (ASD), as defined in DSM‐V, can be relevant in a variety of ways to decision‐making by courts and tribunals. This includes the family, disciplinary, discrimination and criminal law contexts. By reviewing decisions made by superior courts in a number of common law jurisdictions, this article identifies a pivotal role for mental health professionals closely familiar with both the disorder and forensic exigencies to educate courts about the inner world of those with ASD. Highlighting areas of criminality that court decisions have dealt with, especially in relation to persons with Asperger's Disorder, as defined by DSM‐IV, it calls for further research on the connection between ASD, on the one hand, and conduct, capacities and skills, on the other hand. It urges enhancement of awareness of the forensic repercussions of the disorder so that expert evidence can assist the courts more humanely and informedly to make criminal justice and other decisions.