Yagan (; c.1795 11 July 1833) was an Aboriginal Australian warrior from the Noongar people. He played a key part in early resistance to British colonial settlement and rule in the area surrounding what is now Perth, Western Australia. Yagan was pursued by the local authorities after he killed Erin Entwhistle, a servant of farmer Archibald Butler. It was an act of retaliation after Thomas Smedley, another of Butler's servants, shot at a group of Noongar people stealing potatoes and fowls, killing one of them. The government offered a bounty for Yagan's capture, dead or alive, and a young settler, William Keats, shot and killed him. Yagan's execution figures in Australian history as a symbol of the inhumane and brutal treatment of the indigenous peoples of Australia by colonial settlers. He is considered an Australian national hero against British imperialism and also a martyr by the Noongar.After his shooting, settlers removed Yagan's head to claim the bounty. Later, an official sent it to London, where it was exhibited as an "anthropological curiosity" and eventually given to a museum in Liverpool. It held the head in storage for more than a century before burying it with other remains in an unmarked grave in Liverpool in 1964. Over the years, the Noongar asked for repatriation of the head, both for religious reasons and because of Yagan's traditional stature. The burial site was identified in 1993; officials exhumed the head four years later and repatriated it to Australia. After years of debate within the Noongar community on the appropriate final resting place, Yagan's head was buried in a traditional ceremony in the Swan Valley in July 2010, 177 years after his death.

The Noongar (, also spelt Noongah, Nyungar, Nyoongar, Nyoongah, Nyungah, Nyugah, Yunga) are Aboriginal Australian peoples who live in the south-west corner of Western Australia, from Geraldton on the west coast to Esperance on the south coast. Noongar country (Nyungar: Boodja) is the land occupied by 14 different Noongar groups: Amangu, Ballardong, Yued, Kaneang, Koreng, Mineng, Njakinjaki, Njunga, Pibelmen, Pindjarup, Wadandi, Whadjuk, Wiilman and Wudjari.The members of the collective Noongar cultural block descend from peoples who spoke several languages and dialects that were often mutually intelligible. What is now classed as the Noongar language is a member of the large Pama-Nyungan language family. Contemporary Noongar speak Australian Aboriginal English (a dialect of the English language) laced with Noongar words and occasionally inflected by its grammar. Most contemporary Noongar trace their ancestry to one or more of these groups. In the 2001 Australian census, 21,000 persons identified as indigenous in the south-west of Western Australia.