The Experiences in Close Relationships-Revised (ECR-r) is a self-report instrument to assess adult attachment style that seems to have appropriate psychometric qualities. The ECR-r has been most widely studied in student and community samples. In this study we report factor structure, reliability, and construct validity of the Dutch translation of the ECR-r in an outpatient mental health sample (N = 262). The original factor structure could satisfactorily be replicated, the reliability of the ECR-r was also stable over time, and there was good evidence for its construct validity.