We report a case with superior mesenteric arterial thrombosis, for which revascularization using a pedicled in-situ right gastroepiploic arterial graft was performed. The patient was a 65-year-old man with sudden onset of abdominal pain. The urgent operation was performed 16 hours after onset since atherosclerosis of the abdominal aorta was noted. The right gastroepiploic artery was harvested, and end-to-side anastomosed to the distal superior mesenteric artery. The postoperative course was uneventful and he had a good clinical course. Revascularization using the right gastroepiploic artery is possible in cases of superior mesenteric arterial thrombosis, and this procedure should be considered as one choice.