Trevellas is a village in Cornwall, England, United Kingdom, situated midway between St Agnes and Perranporth.

Trevellas valley was a mining site for centuries and known as the "Blue Hills" coloured by bluish slate.

During World War II the nearby Perranporth airport was used as a Royal Air Force base.

[1] Interesting features along the coast include Trevellas Porth,[2] which is popular with divers and fishermen, but because it is quite rocky it is not recommended for swimming.

In Lysons's Magna Britannia it states the following: Treuellis or Trevellis, a tenement in the manor of Tywarnhaile, was for several descents the seat of the family of Crocker; it belonged afterwards to Mr. Joseph Donnithorne, and is now the property of Mr. Chilcot.

At the height of the war over nineteen spitfire squadrons from Australia, France, Canada, Poland, Czechoslovakia and the U.K were based there.

The land was supposed to be handed back to the local residents at the end of the war but fell into disrepair until the purchase as a private airfield.