Introduction: Many survivors of sexual and domestic assault return to violent environments following post-assault care. The objective of this study was to estimate the annual prevalence of revictimization and examine factors associated with return emergency department (ED) visits following their initial encounter for sexual or domestic assault. Methods: The Sexual Assault and Partner Abuse Care Program (SAPACP) at The Ottawa Hospital is the only program in Ottawa offering emergency and forensic care for survivors of sexual assault and domestic violence. Information on demographics, assailant characteristics and clinical presentation were extracted from the SAPACP case registry (January 1 2015- January 31 2016). We conducted descriptive analyses to describe the study sample, and bivariable and multivariable logistic regression modelling to assess factors most strongly associated with revictimization using odds ratios (OR), adjusted OR (AOR) and 95% confidence intervals (CI). Results: Among 377 unique patients seen at the SAPACP, there were 409 encounters for sexual and domestic violence. There were 24 revictimization cases (6.4%) with the number of repeat visits ranging from 2-6. There were 343 (91.0%) female patients and 182 (48.3) under the age of 25. There were 243 (64.5%) sexual assaults, 125 (33.2%) physical assaults, and 42 (11.1%) verbal assaults. Compared to patients who presented once, revictimized patients were more likely to have experienced violence from a current or former intimate partner (AOR:3.02, 95% CI:1.24-7.34), have a substance use disorder (AOR:5.57, 95% CI:2.11-14.68), and were more likely to be taking anti-depressants (AOR:3.34, 95% CI:1.39-8.01). Conclusion: This study has identified a high prevalence of revictimization, with some clients being revictimized as many as 6 subsequent times. Key factors to help identify patients at risk of revictimization are assaults by intimate partners, having substance use problems, and being on antidepressants. Reducing revictimization and preventing further violence is a critical component of care to ensure survivors are safe following their ED encounter.