{{infobox UK feature
|table =
|official_name = Caerhays Castle
|shire_county/state = Cornwall
|country = England
|nation = UK
|map_name = Cornwall
|static_image_name = Caerhayes Castle4.jpg
|static_image_caption = The castle
|static_image_2_name =
|static_image_2_caption =
|os_grid_reference = SW9710541613
|latitude = 50.2396
|longitude = -4.8467
}}
Caerhays Castle or Carhayes Castle (translation of caerhays into English: "enclosed castle") is a semi-castellated [[manor house]]ref located {{convert|0.5|mi|km|abbr=on}} south of [[St Michael Caerhays]], a village in [[Cornwall]], [[England]], UK. It is situated overlooking Porthluney Cove on the [[English Channel]]. The garden hosts the largest collection of [[magnolia]]s in England and contains one of four National Magnolia Collections under the auspices of the [[National Council for the Conservation of Plants and Gardens]].
== Descent of the manor ===== Arundell ===
In the [[Early Middle Ages]], the manor belonged to the family. The earliest record of the name is Karihaes in 1259, and is recorded as Carihays in 1379, but its original meaning is obscure.ref=== Trevanion ===
In about 1379, it passed by marriage to the Trevanion family after the marriage of Robert Trevanion to Johanna Arundell, daughter and heiress of Rudolph Arundell of Caerhays.ref John Trevanion inherited the estate in 1703 after which he improved the [[manor house]] existing on the site and developed gardens.ref
