Cromwell is a town in Central Otago region of the South Island of New Zealand. Cromwell is located on the shores of Lake Dunstan where the Kawarau river joins Lake Dunstan. Cromwell was established during the Otago gold rush and is now more known as one of the sub regions of the Central Otago wine region. In 2018, the town of Cromwell was home to a population of 5610 people.