Gramvousa also Grampousa (Greek: Γραμβούσα or Γραμπούσα, further names include Akra, Cavo Buso, Cavo Bouza, Garabusa and Grabusa) refers to two small uninhabited islands off the coast of a peninsula also known as Gramvousa Peninsula (Greek: Χερσόνησος Γραμβούσας) in north-western Crete in the regional unit of Chania. The Gramvousa Peninsula forms the westernmost of the two pairs of peninsulae in north-western Crete (the other being Rodopos Peninsula) and is the western part of Kissamos Bay.
The Gramvousa islands are administered from the municipality of Kissamos.
The famous lagoon of Balos is located approximately 56km northwest of Chania and 17km northwest of Kissamos, formed between the Cape Gramvousa and the small Cape Tigani and below the range of Platiskinos. Balos is surely the mostly photographed beach in Crete, a very favorite subject of all tourist guides for Greece. It is no coincidence that Prince Charles and Princess Diana visited Balos with their private yacht many years ago.