Type 2 diabetes (T2D) has long been regarded as an incurable and chronic disease according to conventional management methods. Clinical and pathophysiological studies on the natural course of T2D have shown that blood glucose control worsens with an increase in the number of required anti-hyperglycemic agents, as β-cell function progressively declines over time. However, recent studies have shown remission of T2D after metabolic surgery, intensive lifestyle modification, or medications, raising the possibility that β-cell function may be preserved or the decline in β-cell function may even be reversible. The World Health Organization as well as the American Diabetes Association and the European Association for the Study of Diabetes recognize remission as an appropriate management aim. In the light of the state of evidence for T2D reversal, physicians need to be educated on treatment options to achieve T2D remission so that they can actively play a part in counseling patients who may wish to explore these approaches to their disease. This review will introduce each of these approaches, summarizing their beneficial effects, supporting evidence, degree of sustainability, and challenges to be addressed in the future.