Restriction of fermentable oligosaccharides, disaccharides, monosaccharides and polyols (FODMAPs) is an effective dietary treatment for irritable bowel syndrome (IBS). Patient dietary education is essential but labour intensive. Group FODMAP education may alleviate this somewhat but has not previously been investigated. The present study aimed to investigate the clinical effectiveness of low FODMAP group education in patients with IBS and to explore the cost of a group pathway.