General self-reported rates of violence and studies identifying risk factors for delinquency and serious violence have been limited for Asian, particularly Southeast Asian youth. Additionally, the role of psychosocial-cultural related factors such as individualism/collectivism, intergenerational/intercultural conflict, and ethnic identity in delinquency has largely been neglected. In a sample of 329 Cambodian, Chinese, Lao/Mien, and Vietnamese youth, robust risk factors for serious violence (aggravated assault, robbery, gang, rape) included peer delinquency, prior arrest, and victimization. In addition, cultural factors such as second generation status, individualism, and intergenerational/intercultural conflict also significantly increased the odds of serious violence, whereas factors that decreased the odds included collectivism and school achievement. For family/partner violence (hit a family member or boyfriend/girlfriend), the strongest risk factors were victimization and parent discipline. Demographics, individual, and peer domains contributed more explanatory variance for serious violence, while individual and parental domains contributed more explanatory variance for family/partner violence. Consistent with official statistics, rates of serious violence among Southeast Asian youth were higher than for Chinese youth.