The purpose of this study was to develop and evaluate the Family Caregiver Identity Scale (FCIS), an instrument designed to measure the extent to which an individual identifies with the family caregiver role. The process of instrument development outlined in the Standards for Educational and Psychological Testing was combined with Dillman's four stages of pretesting. This was a multistage, iterative process, including several revisions based on feedback from experts, interviews, and pilot testing. Factor analyses were performed to test the hypothesized model of caregiver identity. A version of the FCIS consisting of 18 items was created and demonstrated initial evidence of validity. The FCIS will enable gerontological professionals to assess caregiver identity. The absence of caregiver identity is a factor in caregivers not accessing support services. This study contributes to the growing body of research connecting caregiver identity and support service utilization by caregivers.