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Intussusception in an adult is a rare entity responsible for less than 1% of all intestinal obstructions. It is far more common in children, where the etiology is more often idiopathic. In adults most cases have a demonstrable lesion as the lead point which invariably needs surgical treatment. A gastrointestinal stromal tumour is a rare tumour of mesenchymal origin responsible for only 0.2-1% of all gastrointestinal neoplasms. There have been only a few reports of such tumours causing intussusception in adults. The case being reported is of a 37 years old male who presented to the hospital with an abdominal lump and anaemia. On investigating it was discovered that he had jejunojejunal intussusception due to a gastrointestinal stromal tumour. The high index of suspicion, appropriate use of pre-operative imaging studies and regular postoperative follow-up contributed to a successful outcome.