This is the accepted version of the paper.This version of the publication may differ from the final published version. OBJECTIVES: The aims of this study were to: i) compare sleep patterns of children with communication disorders to the sleep patterns of their typical peers, and ii) ascertain whether sleep patterns related to language in this sample. Permanent repository link METHOD:The relationship between sleep and language was investigated via parental questionnaires. There were sixty-five child participants in total aged between 3-18 years.Parents reported on 28 children with a developmental communication disorder (CD; ASD n=8 or DLD n=20) and 37 who were typical developing.RESULTS: The children with a developmental communication disorder showed more sleep problems than their typical peers particularly in terms of getting to sleep and early waking. Furthermore, significant correlations were found between sleep behaviour and language for children in both groups.CONCLUSION: Children with CD may have poorer sleep patterns than their typical peers which could compound developmental language difficulties.