Hypertension is very common in kidney transplant patients; however, severe and resistant cases should raise suspicion of secondary causes. Pheochromocytomas are rare but serious tumors because of their lethal hypertensive and possible malignant nature. The diagnosis is occasionally elusive, but prompt diagnosis and localization is essential for definitive surgical management. We report a case of a patient with benign pheochromocytoma presenting largely asymptomatically, but with severe resistant hypertension, 6 years after kidney transplantation. To the best of our knowledge, this is the first case report of this type of tumor after kidney transplantation.