Alas, Alas-Kluet, or Batak Alas, is an Austronesian language of Sumatra. The three dialects, Alas, Kluet, and Singkil (Kade-Kade), may not constitute a single language; Alas may be closer to Karo, and the others closer to Dairi. The Alas reject the name 'Batak'.