One of the traditional three administrative parts of the English county of Lincolnshire. It is the dead-flat fenny region in the south to south-east, bordering on the inlet of the North Sea called The Wash, and adjoining Cambridgeshire to the south. The main town is Boston.
The other two parts of Lincolnshire are Lindsey to the north and Kesteven to the west.
In the 1974 reorganization of local government Holland ceased to have an administrative function. It now consists of two districts called Boston and South Holland.