Background: The study aimed to investigate the associations between physical partner violence victimization (IPV) and/or sexual violence victimization and various health risk behaviours and mental health in university students in 25 countries. Methods: Using a cross-sectional study design, 18,335 university students with a median age of 20 years from 25 countries in Africa, the Americas and Asia, replied to self-reported measures of interpersonal violence, health compromising behaviours, mental health measures and protective factors. Results: In adjusted logistic regression analysis, physical IPV and/or sexual violence victimization was associated, among men and/or among women, with sexual risk behaviours (multiple sexual partners, alcohol use in the context of sex, diagnosed with HIV and pregnancy), violence related behaviour (in a physical fight and carrying a weapon), poor mental health (depression, loneliness, post-traumatic stress disorder, sleeping problem and short sleep), addictive behaviour (binge drinking, tobacco and drug use), and other health risk behaviour (skipping breakfast and frequent salt intake). Conclusions: We found evidence that physical IPV and/or sexual violence victimization among female and/or male university students was associated with 4 of 5 sexual risk behaviours, 2 violence related behaviours, 5 of 5 poor mental health indicators, 3 of 3 addictive behaviours and 2 of 7 other health risk behaviours.