INTRODUCTION: Increasing emissions of greenhouse gases contribute to climate change. The healthcare sector, and particularly the operating room, is a significant emitter of greenhouse gases. In head-and-neck surgery, pediatric procedures are very common, but few studies have assessed their ecological impact. Our objective was to quantify the carbon footprint of common pediatric head-and-neck surgeries (tonsillectomy, adenoidectomy, and transtympanic tube placement). METHODS: An eco-epidemiological study was conducted in December 2022 in a tertiary hospital center. The carbon footprint of 10 pediatric head-and-neck surgeries (tonsillectomies, adenoidectomies, transtympanic tube placements) was calculated, as the sum of carbon dioxide (CO RESULTS: The carbon footprint of 1 pediatric head-and-neck surgery was 57.86kgCO CONCLUSIONS: Pediatric head-and-neck surgeries generate a significant quantity of CO