PURPOSE: The aim of this study was to evaluate the effect of laughter yoga on the quality of life and sleep quality in individuals with fecal ostomies. DESIGN: This was randomized controlled trial. SUBJECTS AND SETTING: The sample comprised 55 individuals with an ostomy who received care at Ankara University's I˙bni Sina Hospital Stoma Therapy Unit in Ankara, Turkey. Data were collected over a 2-month period (January and February 2020). METHODS: Participants were allocated into an intervention group (n = 27) who received a yoga therapy intervention and a control group (n = 28) who received no intervention via simple randomization. Demographic and pertinent clinical variables were obtained during a baseline visit in both groups, along with the Pittsburgh Sleep Quality Index (PSQI) and Stoma-Quality of Life (Stoma-QOL) instruments. The intervention group received laughter yoga weekly over a period of 8 weeks. RESULTS: Mean scores on the PSQI and the Stoma-QOL at baseline were compared. Participants in the intervention had a significant decline in mean PSQI scores (6.85 vs 5.48, P = .044) indicating improvement in sleep quality following the intervention. Analysis revealed no significant difference in mean Stoma-QOL scores (P = .077). Control group participants had no significant difference in either mean PSQI or Stoma-QOL scores following data collection at the end of 8 weeks. CONCLUSIONS: Laughter yoga had a positive effect on the sleep quality in individuals with fecal ostomies. Further research is recommended to evaluate the effect of the number of laughter yoga sessions on the sleep quality and quality of life in individuals with ostomies.