This article summarizes research examining the relationship between the constructs of ethnic identity and personal well-being among people of color in North America. Data from 184 studies analyzed with random effects models yielded an omnibus effect size of r = 0.17, suggesting a modest relationship between the 2 constructs. The relationship was somewhat stronger among adolescents and young adults than among adults over age 40. No differences were observed across participant race, gender, or socioeconomic status, which findings support the general relevance of ethnic identity across people of color. Studies correlating ethnic identity with self-esteem and positive well-being yielded average effect sizes twice as large as those from studies correlating ethnic identity with personal distress or mental health symptoms. Ethnic identity was thus more strongly related to positive well-being than to compromised well-being. Overall, the corpus of research reviewed consisted of correlational designs; limited scholarship has addressed causal mechanisms, mediating factors, or psychological functions of ethnic identity across different social contexts. (Contains 3 tables.)