Alberto Achacaz Walakial (1929? – August 4, 2008) was a Chilean citizen and one of the last full-blooded Kaweskars, who are also known as the Alacaluf, or Halakwulup. The Kaweskar are an indigenous Native American people who were once found in coastal regions of Chilean Patagonia. There are estimated to be only approximately a dozen full-blooded Kaweskars still living following Achacaz's death in 2008. However, there are no Kaweskar women of fertile age remaining, so the tribe appears to be headed for extinction.