Coordinates: 56°11′47″N 3°10′24″W / 56.1964°N 3.1732°W / 56.1964; -03.1732

Glenrothes ( listen (help·info); pronunciation: /ɡlɛnˈrɒθɨs/, glen-ROTH-iss; Scottish Gaelic: Gleann Ràthais) is a large town situated in the heart of Fife, in east-central Scotland. It is located approximately 30 miles (48 km) from both Edinburgh, which lies to the south and Dundee to the north. The town had an estimated population of 38,750 in 2008, making it the third largest settlement in Fife. The name Glenrothes comes from its historical link with the Earl of Rothes who owned much of the land upon which the new town has been built; "Glen" (Scottish for valley) was added to the name to avoid confusion with Rothes in Moray and in recognition that the town lies in a river valley.

Planned in the late 1940s as one of Scotland's first post-second world war new towns its original purpose was to house miners who were to work at a newly established coal mine, the Rothes Colliery. Following the failure of the mine the town developed as an important industrial centre in Scotland's Silicon Glen between 1961 and 2000 with several major electronics and hi-tech companies setting up facilities in the town. The Glenrothes Development Corporation (GDC), a non-departmental public body, was established to develop, manage and promote the new town. The GDC supported by the local authority oversaw the governance of Glenrothes until the wind-up of the GDC in 1995, after which all responsibility was transferred to Fife Council.