Longitudinal multimethod data across three time points were examined to explore the associations between previously institutionalized toddlers' (N = 71; 59% female) socioemotional skills (Time Point 1: 18 months to 3-years-old), executive functioning (i.e., attention, working memory, inhibitory control) in the preschool years (Time Point 2: 2-4-years-old), and adjustment in kindergarten (5-6-years-old). Children were from multiple regions (35% Eastern European, 31% Southeast Asian, 25% African, and 9% Latin American), and 90% of adoptive parents were White from the Midwestern United States. Socioemotional competency at Time Point 1 was associated with fewer attention problems and greater inhibitory control at Time Point 2, which were subsequently associated with more observed social competence, greater observed classroom competence, and less teacher-reported teacher-child conflict in kindergarten. Indirect effects from socioemotional competencies in toddlerhood to kindergarten adjustment via executive functioning during the preschool period emerged. (PsycInfo Database Record (c) 2023 APA, all rights reserved).