Teen dating violence (TDV), encompassing physical, psychological, and sexual forms, represents a prevalent issue associated with lasting consequences for adolescents' health and well-being. Although research on child protective services (CPS) youth is limited, this population may be especially vulnerable, as childhood maltreatment is a well-established risk factor for both TDV victimization and perpetration. Consequently, CPS youth should be prioritized in preventive efforts; however, little empirical evidence is available to guide such initiatives. Thus, this study examined the prevalence of different forms of TDV (i.e., psychological, physical, sexual) and identified potential risk factors associated with both victimization and perpetration among CPS youth. From a larger study of adolescents recruited from 34 high schools in Quebec, Canada, a subsample of 290 CPS-involved adolescents (Mage = 15.60; SD = 1.03) who reported having dated was selected. Participants completed a self-report questionnaire. Results indicated high prevalence rates of both TDV victimization (n = 162; 66%) and perpetration (n = 154; 67%), with psychological TDV emerging as the most prevalent form. Hierarchical regression analyses showed that, after controlling for sex, age, and childhood maltreatment, self-efficacy to deal with TDV and acceptance of gender norms were significantly associated with both TDV victimization (R² = .187) and perpetration (R² = .148). Lower self-efficacy was associated with higher risk of victimization (β = -.274, p < .001) and perpetration (β = -.140, p = .048), while stronger acceptance of gender norms was linked to increased victimization (β = .174, p = .016) and perpetration (β = .191, p = .009). No significant associations were found for conflict resolution strategies (i.e., problem-solving, withdrawal, and emotion-focused). These findings highlight the alarming prevalence of TDV among CPS youth. Moreover, targeting self-efficacy and challenging gender norms in preventive interventions offers a promising avenue within clinical or community settings targeting at-risk youth.