Purpose of Review Bariatric surgery has become increasingly common given the increasing prevalence of obesity and its associated co-morbidities. As a result, patients who have surgically altered anatomy will be seen with increasing frequency by gastroenterologists. Recent Findings Complications that arise in this patient population are unique and require specific knowledge for appropriate treatment. Summary A basic understanding of surgical anatomy, possible complications, and endoscopic techniques for management is crucial. This review focus on major complications that arise in the setting of bariatric surgery and commonly seen by endoscopists.