The current study examined ethnic -racial identity (ERI) development and adjustment among Colombian adolescents ( N = 462, M age = 15.90, SD = 1.15, 47% female) from six schools in Medellin, Colombia. Findings from chain sequential mediation analyses with bias -corrected bootstrapping indicated that ERI exploration was positively associated with ERI resolution (8 = 0.48), which was positively associated with global identity cohesion (8 = 0.29); in turn, higher global identity cohesion was associated with higher academic engagement (8 = 0.26), higher self-esteem (8 = 0.50), lower GPA (8 = -0.12), and lower depressive symptoms (8 = -0.35). ERI exploration (8 = 0.14) and resolution (8 = 0.11) were each positively associated with other group orientation. Findings provide preliminary evidence for the promotive role of ERI among Colombian adolescents, supporting a conceptualization of ERI as a developmental competency.