Kalau Lagau Ya, Kalaw Lagaw Ya, Kala Lagaw Ya, or the Western Torres Strait language is the language indigenous to the central and western Torres Strait Islands, Queensland, Australia. On some islands, it has now largely been replaced by Torres Strait Creole.

The Torres Strait Islands are an archipelago of at least 274 small islands in the Torres Strait, a waterway separating far northern continental Australia's Cape York Peninsula and the island of New Guinea. They span an area of 48,000 km2 (19,000 sq mi), but their total land area is 566 km2 (219 sq mi).