青尼罗河（阿姆哈拉语：ጥቁር አባይ，阿拉伯语：النيل الأزرق‎）发源于埃塞俄比亚塔纳湖，流经苏丹，最终在喀土穆与白尼罗河汇流成尼罗河，全长约1460-1600公里。尼罗河的定期泛滥正是由于青尼罗河，因其上游埃塞俄比亚为热带草原气候，分为干湿两个季节。

The Blue Nile (Amharic:ዓባይ; transliterated: ʿAbbay but pronounced Abbai, Arabic:النيل الأزرق‎ an-Nīl al-Azraq) is a river originating at Lake Tana in Ethiopia. With the White Nile, the river becomes one of the two major tributaries of the Nile. The upper course of the river is called the Abbay in Ethiopia, where many regard it as holy. Some Ethiopians have long identified the Blue Nile as the River Gihon mentioned as flowing out of the Garden of Eden in Genesis 2 and "encircling the entire land of Cush".