Abdominal physical examination remains crucial in diagnosing functional gastrointestinal disorders (FGIDs). It provides real-time insights into patient conditions, including responses to positional and respiratory changes that imaging cannot replicate. Furthermore, it offers unique diagnostic clues for FGIDs like intestinal motility disorders and visceral hypersensitivity through inspection, auscultation, percussion, and palpation. This chapter details a comprehensive abdominal examination, covering preparation and the systematic order of inspection, auscultation, percussion, and palpation. It also discusses findings that contribute to the examination of FGIDs, such as abdominal morphology, distension (e.g., ascites, Mesenterium commune), postoperative scars, vascular signs indicative of hepatic dysfunction, intestinal motility patterns, vascular lesions, liver size, intestinal gas distribution, peritoneal irritation, unique colonic anatomies in Japanese patients, inflammation, organ characteristics, fecal masses, and key tenderness points.