This article reviews Autism Spectrum Rating Scales (ASRS) which are designed to measure behaviors in children between the ages of 2 and 18 that are associated with disorders on the autism spectrum as rated by parents/caregivers and/or teachers. The rating scales include items related to behaviors associated with Autism, Asperger's Disorder, and Pervasive Developmental Disorder-Not Otherwise Specified (PDD-NOS). The ASRS are a norm-referenced tool based on the diagnostic criteria of ASDs in the Diagnostic and Statistical Manual of Mental Disorders (4th ed.), Text Revision (DSM-IV-TR; American Psychiatric Association, 2000). The rating scales can be completed in a variety of settings (i.e., home, school) by parents, caregivers, and teachers. They are quick and easy to complete and the manual is user friendly. The ASRS can be completed by both teacher raters and parent/caregiver raters, which can provide the examiner with a more comprehensive representation of the child's functional behaviors.