Cromwell is a town in Central Otago in the Otago region of New Zealand.
It is situated between State Highway 6 (linking to Wanaka, 50 km north, and Queenstown, 60 km west) and State Highway 8 leading to the Lindis Pass, 75 km northeast, and Alexandra, 33 km south. The road to Alexandra winds through the Cromwell Gorge. A point near Cromwell lies 119 kilometres from the sea, the farthest from the sea anywhere in New Zealand. A prominent feature surrounding much of the town is the man-made Lake Dunstan. Cromwell also has the newly constructed Highlands Motorsport Park. Nearby settlements are at Bannockburn, Lowburn, Tarras, and Ripponvale.