Alatau (Russian: Алатау; Kazakh: Алатау), Alatoo (Kyrgyz: Алатоо), Alatagh or Alatag (Turkish: Аladağ) is a generic name for a number of mountain ranges in Central Asia, characterized by interleaving areas of vegetation, scattered rocks and snows.
Notable mountain ranges that share the name include:
- Kuznetsk Alatau, a mountain range in South Siberia, Russia
- Several ranges of the Tian Shan
- Dzungarian Alatau, North Tian Shan, Kazakhstan/China
- Kungey Alatau, West Tian Shan, Kazakhstan/Kyrgyzstan
- Kyrgyz Alatau, West Tian Shan, Kazakhstan/Kyrgyzstan
- Talas Alatau, West Tian Shan, Kazakhstan/Kyrgyzstan/Uzbekistan
- Terskey Alatau, South Tian Shan, Kyrgyzstan
- Trans-Ili Alatau, West Tian Shan, Kazakhstan/Kyrgyzstan