Borderline personality disorder (BPD) is a precarious psychiatric disorder requiring psychometrically sound instruments for accurate assessment. Due to minimal evidence demonstrating convergent validity of the self-report version of the Zanarini Rating Scale for BPD, the current study aimed to examine the validity and reliability of this instrument. Participants were 62 undergraduate university students aged 18-54 years. Corresponding instruments selected for validation included a modified version of the McLean Screening Instrument for BPD, the International Trauma Questionnaire, the Difficulties in Emotion Regulation Scale Short Form, the Paranoid Thoughts Scale – Revised, the Brief Dissociative Experiences Scale – Adult, three items from the Self-Injurious Thoughts and Behaviours Interview-Revised, and the Experiences in Close Relationships – Short Form. The total score of the self-report Zanarini Rating Scale for BPD was found to demonstrate acceptable reliability and validity, however the subscales reflecting the four sectors of BPD did not demonstrate adequate internal consistency. Results of this study indicate that the total score of the self-report Zanarini Rating Scale for BPD is acceptable to assess for BPD symptomatology in non-clinical populations. A strong correlation between the Zanarini Rating Scale for BPD and the International Trauma Questionnaire, although not diagnostic of either BPD or complex post-traumatic stress disorder, may be clinically relevant.