BACKGROUND There are few publications on revising sleeve gastrectomy (SG) to one-anastomosis gastric bypass (OAGB). OBJECTIVE This study was undertaken to determine outcomes in terms of weight loss and resolution of co-morbidities in patients who had SG revised to OAGB. METHODS A high-volume university-affiliated bariatric surgery center in India. METHODS Information was collected from patients identified in a prospectively maintained database of patients who had a revision from SG to OAGB. An analysis of outcomes in terms of weight loss and maintenance with up to 3-years follow-up is reported. RESULTS Thirty-two patients were revised from SG to OAGB. Of the 32 revised patients, 9 (28%) had type 2 diabetes, 15 (47%) had hypertension, and 2 (6%) had sleep apnea at the time of the initial SG. At the time of revision only 2 of 32 (6.25%) had type 2 diabetes, 3 (9.4%) had hypertension, and none had sleep apnea. The average initial weight in this study before SG was 118 kg and body mass index was 44.04 kg/m2. The average weight at the nadir and at revision was 92.1 and 103.5 kg, respectively. Average weight was 93.5, 94.3, and 100.6 kg (P < .002) at 1-, 2-, and 3-year follow-up, respectively. There was reoccurrence of type 2 diabetes in 1 patient at 3 years after revision due to weight regain. There were no complications in this study. CONCLUSIONS In this study, revision of SG to OAGB because of inadequate weight loss or significant weight regain was safe and effective at 2-year follow-up; however, there was a tendency toward weight regain at 3 years. Multicenter studies with larger series of patients and longer-term follow-up after SG revision to OAGB are needed.