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The Caregiver Strain Questionnaire assesses the three dimensions of caregiver strain, namely the objective, subjective externalized and subjective internalized strain. It was validated among caregivers of children with Autism Spectrum Disorder (ASD) in the United States and Mainland China with promising psychometric properties. This study aimed to develop and validate the Chinese (traditional script) version of the Caregiver Strain Questionnaire (C-CGSQ) among 198 caregivers of children with ASD in Hong Kong. The C-CGSQ showed excellent internal consistency ([alpha] = 0.958) and test-retest reliability (Spearman's r = 0.966). Concurrent, convergent, divergent validity and a three-factor structure (consistent with previous studies) were established. The C-CGSQ demonstrated promising psychometric properties in measuring caregiver strain among caregivers of Chinese ASD children in Hong Kong.