Bytham Castle was a castle in the village of Castle Bytham in Lincolnshire (grid reference SK992186.)
The castle is thought to be of early Norman origin, but little is known of its history. The earthworks, situated on a hill above the village, are very visible but nothing of the stonework is above ground.
The site is in private ownership and not open to the public.
Coordinates: 52°45′21″N 0°31′54″W / 52.75591°N 0.53155°W