Design: Validation cross-sectional study. Objectives: Even though caregiver burden (CB) represents a well-recognised concern among caregivers of people with a spinal cord injury (SCI), there are no specific questionnaires designed for its evaluation. This study aimed to assess the psychometric properties of the Caregiver Burden Inventory in Spinal Cord Injury (CBI-SCI), which was modified from its original version, and specifically its construct and reliability. Setting: Multicentre study in four urban spinal units across Italy.