Northfields is a London Underground station in Northfields, in the London Borough of Ealing. The station is on the Heathrow branch of the Piccadilly line, between Boston Manor and South Ealing stations. It is located on Northfield Avenue (B452) and in Travelcard Zone 3.

Northfields is an area in Ealing, west London. It is centred on Northfield Avenue, a shopping street of mostly independent shops and restaurants. It lies partially in the Ealing W5 and partially in west Ealing's W13 postcode. It lies in the southwest corner of Ealing.