The Yaghan, also called Yagán, Yahgan, Yámana, Yamana, or Tequenica, are one of the indigenous peoples of the Southern Cone, who are regarded as the southernmost peoples in the world.

Their traditional territory includes the islands south of Isla Grande de Tierra del Fuego, extending their presence into Cape Horn.

They have been there for more than ten thousand years.In the nineteenth century, they are known as Fuegians by the English-speaking world, but the term is now avoided as it can refer to any of the several indigenous peoples of Tierra del Fuego.

(For instance, the Selk'nam inhabited the northeastern part of Tierra del Fuego.)

Some are reputed to still speak the Yaghan language (also known as Yámana), which is considered to be a language isolate; however, most speak Spanish.

As of 2012, Cristina Calderón, who lives in Chile territory, is known as the last full-blooded Yahgan and last native speaker of the Yahgan language.The Yaghan are traditionally nomads, who are hunter-gatherers, traveling by canoes between islands to collect food: the men hunting sea lions, the women diving to collect shellfish.