Perceived loneliness and social competence were assessed for 127 children with ASD without comorbid ID, 4-7 years old, through child self-report. Using an abbreviated version of the "Loneliness and Social Dissatisfaction Questionnaire" (LSDQ; Cassidy and Asher in Child Dev 63:250-365, 1992), the majority of children reported friendships, yet a considerable proportion also reported social difficulties. Factor analysis of the abbreviated LSDQ identified three factors, which were significantly associated with parent- and teacher-reported variables. Regression analyses revealed parent-reported social skills deficits and teacher-reported conflict in the student-teacher relationship to be associated with child-reported loneliness. Implications for practice are discussed. [This article was published in the "Journal of Autism and Developmental Disorders" v46 n2 p436-449 Feb 2016 (EJ1088315).]