Saudi Arabia is the largest country in the world without a river

Saudi Arabia is the 13th-largest country in the world, and the second-largest in the Arab world — behind Algeria —  at 830,000 square miles.

Ninety-five percent of thof the country is considered a desert or semidesert, and it has some of the largest desert areas, including An Nafud 

and Rub al-Khali. Only 1.45% of the land is arable. And while it doesn't have a river, its "extensive coastlines on the Persian Gulf and Red Sea provide great leverage on shipping (especially crude oil) through the Persian Gulf and Suez Canal," according to the CIA World Factbook.