OBJECTIVE: Effective "task shared," or nonspecialist delivered, psychological interventions for children and adolescents have been developed or adapted in low- and middle-income countries with the aim of closing the global treatment gap for youth mental health care. Yet, delivery remains limited, in part due to the lack of knowledge of associated implementation, or process, outcomes. This scoping review aims to describe, examine the quality of, and synthesize findings on implementation outcomes of child and adolescent psychological interventions in low-and middle-income countries. METHODS: PubMed, Web of Science, and PsycInfo were searched for studies on child and adolescent psychological interventions in low- and middle-income countries reporting on implementation outcomes. After abstract and full-text review, data were extracted and summarized on implementation outcomes and quality of implementation outcomes reporting. Implementation barriers and recommendations for addressing barriers were also charted and narratively synthesized. RESULTS: Out of 5,207 manuscripts, 86 met inclusion criteria. Younger children were underrepresented. Studies largely reported feasibility and acceptability and did not state hypotheses or use conceptual models. Barriers primarily related to interventions being too complex, not an acceptable fit with participant cultures, and facilitators lacking time for or experiencing distress delivering interventions. Recommendations focused on increasing intervention fit and flexibility, training and support for facilitators, and linkages with existing systems. CONCLUSIONS: Rigorous, broader implementation outcomes research is needed within child and adolescent psychological intervention research in low-and middle-income countries. Current evidence suggests the importance of the further developing strategies to increase acceptability to participants and better support facilitators.