There are ten castles of note in Dorset.

Name
Type
Date
Condition
Image Ownership
/ Access
Notes (Key)
Brownsea Castle Castellated house 150116–19th century Intact ENT Incorporates part of 16th century Henrician Castle.
Christchurch Castle Motte and bailey 110112–14th century Fragmentary remains EH Well-preserved hall known as Constable's House survives, featuring one of only five remaining Norman chimneys in England.
Corfe Castle Keep and bailey 100111–13th century Extensive ruins ENT Besieged and slighted during the Civil War.
Lulworth Castle Sham castle 1610c.1610 Restored EH Hunting lodge, gutted by fire 1929.
Pennsylvania Castle Neo-romantic castle 18011800 Intact Private On the Isle of Portland, built for John Penn to designs by James Wyatt.
Portland Castle Artillery fort 15391539 Intact EH Private residence 1816–70.
Rufus Castle Castle 140115th century Ruins Private Also known as Bow and Arrow Castle.
Sandsfoot Castle Artillery fort 150116th century Fragmentary remains HAL Abandoned 1644–5.
Sherborne Castle Keep and bailey 110112th century Ruins EH Replaced by 16–17th house which became known as Sherborne Castle.
Woodsford Castle Fortified manor house 130114th century Habitable Landmark Trust