Delafield is a city in Waukesha County, Wisconsin, along the Bark River, and a suburb of Milwaukee. The population was 6,472 at the 2000 census.
The city of Delafield is a separate municipality from the Town of Delafield, both of which, along with the Village of Nashotah, and the southern part of the Village of Hartland, are situated in the geographical township of Delafield.
St. John's Northwestern Military Academy, a private Episcopal military school, is in Delafield. The Kettle Moraine School District also serves most of the Delafield Area.