{{Use dmy dates, date=April 2022 This is a list of castles and

fort A fortification is a military construction or building designed for the defense of territories in warfare, and is also used to establish rule in a region during peacetime. The term is derived from Latin ''fortis'' ("strong") and ''facere'' ...

s in the

Channel Islands The Channel Islands ( nrf, Îles d'la Manche; french: îles Anglo-Normandes or ''îles de la Manche'') are an archipelago in the English Channel, off the French coast of Normandy. They include two Crown Dependencies: the Bailiwick of Jersey, ...

Guernsey

* Castle Cornet * Fort Doyle * Fort George *

Fort Grey Fort Grey, colloquially known as the "cup and saucer", is a Martello tower located on a tidal rock in Rocquaine Bay in Saint Peter, Guernsey on the west coast of the island. Château de Rocquaine The French name of the rock is the ''Château ...

* Fort Le Marchant * Fort Pembroke, Guernsey * Fort Richmond, Guernsey * Fort Saumarez *

Fort Hommet Fort Hommet (or Fort Houmet) is a fortification on Vazon Bay headland (or '' houmet'' in Guernésiais) in Castel, Guernsey. It is built on the site of fortifications that date back to 1680, and consists of a Martello tower from 1804, later additio ...

Vale Castle Vale Castle, is a protected building located in the Vale, Guernsey. The original name was "Le Chateau St Michel", later it became "Chateau de Val" or "Chateau de Valle" and is over 1,000 years old. It defends both St. Sampson's harbour at the easter ...

* Fort Duquemin *

Bréhon Tower The Bréhon Tower (Fort Brehon) is accessible only by boat and sits on Bréhon Rock, an island in the Little Russell channel about 1.5 km northeast of St Peter Port, Guernsey, between the port and the islands of Herm and Jethou. Thomas Char ...

* Fort Grandes Rocques

Alderney

* Château à L'Etoc * Essex Castle *

Fort Albert Fort Albert (map reference ) is a tower fort nestling under the cliffs south-west of Fort Victoria on the Isle of Wight, England. It was also known as Cliff End Fort, named after the Northern extremity of Colwell Bay (Cliff's End). History Fort ...

Fort Clonque Fort Clonque is a 19th-century coastal fortress in Alderney, in the Bailiwick of Guernsey in the Channel Islands. It was constructed at a time when French naval power was becoming an increasing concern to the British. It is built on a rocky outc ...

* Fort Corblets * Fort Doyle * Fort Grosnez * Fort Homeaux Florains * Fort Houmet Herbe * Fort Platte Saline * Fort Quesnard * Fort Raz * Fort Tourgis

Jersey

* Câtel Fort *

Elizabeth Castle Elizabeth Castle () is a castle and tourist attraction, on a tidal island within the parish of Saint Helier, Jersey. Construction was started in the 16th century when the power of the cannon meant that the existing stronghold at Mont Orgueil wa ...

Fort Regent Fort Regent is a 19th-century fortification and leisure centre on Mont de la Ville (Town Hill), in St. Helier, Jersey. The fort is in close proximity to the fortified South Hill Engineers Barracks at La Collette and overlooks the 16th-century E ...

* Fort Henry, Jersey * Fort Leicester, Jersey *

Grosnez Castle Grosnez Castle is a ruined 14th-century castle in Saint Ouen, situated in Grosnez in the north-west corner of the island of Jersey in the Channel Islands. Philippe de Carteret held it against the French when they held half of Jersey between 1461 ...

* La Crête Fort * L’Etacquerel Fort *

Mont Orgueil Mont Orgueil (French for 'Mount Pride') is a castle in Jersey that overlooks the harbour of Gorey. It is also called Gorey Castle by English-speakers, and ''lé Vièr Châté'' (the Old Castle) by Jèrriais-speakers.The castle is first called 'M ...

* Saint Aubin's Fort

Guernsey

Guernsey

Alderney

Jersey

See also