Greencastle Golf Club is a beautiful 18 hole links course which nestles in the idyllic surrounds of the Inishowen Peninsula. It is a members owned course on the banks of, and superb views across, Lough Foyle, from Derry/Londonderry to Rathlin and the Scottish Isles. It is based in the north of the Inishowen Peninsula in County Donegal. The club was founded in 1892 as a nine hole course and during it's centenary year opened a further nine, very challenging holes.

The course is 5293 metres in length, par 69. The ladies course measures 4675 metres, par 69.