This randomized controlled trial examined the effects of laughter yoga on resilience and coping attitudes in mothers of children hospitalized in the pediatric intensive care unit. Mothers whose children had been hospitalized for at least one week were randomly assigned to an intervention or control group. The intervention group participated in structured laughter yoga sessions lasting 15-20 minutes over 3-4 days, while the control group received routine care. Psychological resilience and coping attitudes were assessed using standardized measurement tools. The study aimed to provide evidence for a brief, non-pharmacological intervention to support maternal psychological well-being in PICU settings.