Grovetown is a small town in Marlborough, New Zealand. State Highway 1 runs past the settlement to the west, and the Wairau River flows past to the northeast. Spring Creek is about 2.5 km to the north, and Blenheim is about 3.5 km to the south. To the east is Grovetown Lagoon, an oxbow loop of the Wairau River. The settlement had a usual resident population of 357 at the 2018 New Zealand census.