Halswell is an outr suburb of Christchurch, New Zealand, located in open country nine kilometres southwest of the city centre on State Highway 75. A residential suburb, it has little in the way of its own industry and acts as an inner commuter suburb.

Until recently, Halswell was completely separated from the city geographically, but in recent years many new subdivisions have been created to the north of the suburb, creating the new suburbs of Oaklands and Westlake. These have effectively joined Halswell to the Christchurch urban area.