One-north is a subzone of Queenstown, Singapore, first developed by JTC Corporation as the country's research and development and high technology cluster. It was first conceptualised in 1991 as part of the National Technology Plan and officially launched on 4 December 2001 by then Deputy Prime Minister Tony Tan Keng Yam.

Queenstown is a planning area and satellite residential town situated on the south-westernmost fringe of the Central Region of Singapore. It borders Bukit Timah to the north, Tanglin to the northeast, Bukit Merah to the east and southeast, as well as Clementi to the northwest and west. Its southern and southwesternmost limits are bounded by the Pandan Strait.