<p>Family adversity may shape adolescents’ involvement in bullying, yet studies often examine single family exposures in isolation or collapse bullying into a single outcome. Less is known about how distinct forms of parental violence and parental alcohol-related behaviors relate to role-specific bullying involvement in low- and middle-income settings.&#xa0;We examined whether parental violence (physical, psychological, and sexual) and parental alcohol exposure (use and intoxication) were associated with adolescents’ bullying roles (victim, perpetrator, and perpetrator-victim) among Brazilian students.&#xa0;We analyzed cross-sectional, school-based, census survey data from 4,280 adolescents (mean age = 14.7, SD = 1.8) enrolled in 13 public-schools across four municipalities in São Paulo State, Brazil. We used multinomial logistic regression to estimate adjusted odds ratios for bullying roles, controlling for age, gender, race/skin color, and socioeconomic status, with standard errors corrected for school level intragroup correlation.&#xa0;Physical, psychological, and sexual violence were associated with higher odds of all bullying roles, with the strongest associations for perpetrator-victims. Psychological and sexual violence showed the largest effect sizes. After adjustment, parental intoxication was associated with higher odds of perpetration and perpetrator-victim involvement, but not victimization. In contrast, parental alcohol use was associated only with perpetrator-victim involvement. Younger age, female gender, and gender diversity were associated with higher odds of victimization.&#xa0;Parental violence was consistently associated with all bullying roles, especially perpetrator-victims. Parental intoxication, rather than alcohol use alone, was more strongly linked to bullying perpetration and perpetrator-victim involvement. Bullying prevention may benefit from integrating family-focused and school-based strategies.</p>