Background : Intussusception is a rare but recognised complication following bariatric surgery, with varying incidence across different surgical techniques but most commonly occurring after a Roux-en-Y gastric bypass (RYGB). The Single Anastomosis Duodeno-Ileal (SADI) bypass is a different bariatric procedure that has a single anastomosis compared to the RYGB which has two anastomoses. This report details a case of postoperative intussusception following a SADI bypass which has not previously been described. Case Presentation: This is a case of a 47-year-old male who had a small bowel intussusception after a SADI bypass. He presented with intermittent colicky abdominal pain with a computed tomography (CT) demonstrating features consistent with intussusception. The patient underwent diagnostic laparoscopy which showed the intussusception had spontaneously resolved. The patient’s recovery was uneventful. Discussion: Intussusception following bariatric surgery has been most frequently reported after RYGB, with an estimated incidence ranging from 0.07% to 0.64%. Proposed mechanisms include altered bowel motility or loss of coordinated bowel peristalsis, loss of mesenteric fat after significant weight loss, and anastomotic staple lines acting as potential points of intussusception. SADI bypass differs anatomically from RYGB and lacks a jejunojejunal anastomosis, which may account for the apparent rarity of this complication in SADI-S patients. Conclusion: Although exceedingly rare, intussusception should be considered in the differential diagnosis of post-SADI-S patients presenting with episodic abdominal pain. This case highlights the need for awareness of uncommon complications even in SADI bypass procedures.