阿瓦什河（Awash River）是埃塞俄比亚的主要河流，也是内流盆地流域的主要河流。整个流域在埃塞俄比亚境内，流经阿姆哈拉州、奥罗米亚州、索马里州和阿法尔州南部，最终注入与吉布堤交界处的阿贝湖。

埃塞俄比亚中央统计局数据显示，阿瓦什河全长1,200公里。1911年大英百科全书指出，中游位置在旱季时接近200英呎（60米）阔和4英呎（1.2米）深，在水灾时水位从最低点上升50至60英呎（15至20米），淹没河岸大片平原。

1980年，阿瓦什河的低谷地区列入联合国教科文组织世界遗产，登陆名称为阿瓦什低谷。

The Awash (sometimes spelled Hawash; Afar We'ayot) is a major river of Ethiopia. Its course is entirely contained within the boundaries of Ethiopia, and empties into a chain of interconnected lakes that begin with Lake Gargori and end with Lake Abbe (or Abhe Bad) on the border with Djibouti, some 100 kilometers (60 or 70 miles) from the head of the Gulf of Tadjoura. It is the principal stream of an endorheic drainage basin covering parts of the Amhara, Oromia and Somali Regions, as well as the southern half of the Afar Region.