BACKGROUND: After-school care programs have garnered interest in recent years as the hours of 3:00–6:00p.m. are an opportune time for children to engage in healthy behaviours, specifically healthy eating and physical activity. Care providers are major influencers within the after-school care setting, impacting health promoting opportunities for children. However, little is known regarding the role care providers play in health promotion interventions in this setting, specifically those using comprehensive approaches. The purpose of this research was to explore care providers’ role and experience promoting healthy eating and physical activity through the after-school care health promotion intervention School’s Out…Let’s Move (SOLMo). SOLMo was guided by the evidence-based comprehensive school health framework, and included a focus on healthy eating and physical activity. METHODS: This research was guided by the qualitative method focused ethnography. Semi-structured interviews with care providers (n=13) taking part in SOLMo were conducted. Participant observation was included as part of data generation to further understand care provider roles. RESULTS: Overall, care providers were supportive of promoting health behaviours in the after-school setting. Through latent content analysis, five themes emerged related to care providers’ role and experience promoting healthy eating and physical activity through SOLMo: 1) enhanced awareness; 2) improved programming; 3) strong relationships; 4) collaborative approach; and 5) role tension. CONCLUSIONS: As major influencers, care providers play a crucial role, and these results will contribute to implementation strategies used to promote healthy lifestyle behaviours for children.