Atypical reactions to the sensory environment are often reported in autistic individuals, with a high degree of variability across the sensory modalities. These sensory differences have been shown to promote challenging behaviours and distress in autistic individuals, with downstream effects on other functions including motor, social, and cognitive abilities. Preliminary research suggests that specific sensory differences may cluster together within individuals creating discrete sensory phenotypes. However, the manner in which these sensory differences cluster, and whether the resulting phenotypes are associated with specific cognitive and social challenges is unclear. Short Sensory Profile data from 599 autistic children between the ages of 1 and 21 years were subjected to a K-means cluster analysis. A five-cluster model was found to minimize error variance and produce five meaningful sensory phenotypes: (1) Sensory Adaptive, (2) Generalized Sensory Differences, (3) Taste and Smell Sensitivity, (4) Under-Responsive and Sensation Seeking, and (5) Movement Difficulties with Low Energy. Age, adaptive behaviour, autistic symptomatology, attention deficits and hyperactivity, and obsessive and compulsive traits were found to differ significantly across the five phenotypes. These findings suggest that sensory difficulties in autistic individuals can be clustered into meaningful sensory phenotypes, and that these phenotypes are associated with behavioural differences. Given the large degree of heterogeneity in sensory difficulties seen in the autistic population, these sensory phenotypes represent a meaningful way to parse that heterogeneity and create meaningful phenotypes that may aid in the development of effective treatments and interventions for sensory difficulties. However, the results were based on parent-report measures of sensory processing, adaptive behaviour, autistic symptomatology, attention deficits and hyperactivity, and obsessive and compulsive traits, which may limit the generalizability of the findings.