奥龙特斯河也译作欧朗提斯河（希腊语：Ορόντης ποταμός），又称为阿西河（阿拉伯语：نهر العاصي‎，土耳其语：Asi Nehri）是中东地区一条跨国河流。发源于黎巴嫩的贝卡谷地，向北流经叙利亚、土耳其，在土耳其的安塔基亚北部萨曼达注入地中海。全长396公里。

• 土耳其境内的奥龙特斯河

• 流经叙利亚哈马的阿西河

• 流经叙利亚哈马的阿西河

The Orontes (/əˈrɒntiz/; Ὀρόντης) or Asi (Arabic:العاصي‎, ‘Āṣī; Turkish:Asi) is a northward flowing river starting in Lebanon and flowing through Syria and Turkey before entering the Mediterranean Sea.

It was anciently the chief river of the Levant, The modern name ‘Āṣī means ("rebel"), because the river flows from the south to the north unlike the rest of the rivers in the region.