evidence: The correct answer is Saudi Arabia. Saudi Arabia does NOT have a single river, flowing within its boundaries. Saudi Arabia is the largest country in the world with no rivers at 830,000 square miles. There are no rivers or lakes or areas of abundant natural vegetation because rainfall is scant to non-existent.Does Vatican City have no river? [...] Saudi Arabia is a desert country with no permanent rivers or lakes and very little rainfall.What is the largest country without a lake? Land of No LakesAlthough many of these countries do have streams and seasonal bodies of water, they do not have permanent lakes and rivers. Saudi Arabia, the world's largest country without a lake or river, is known as the "land of no rivers." For a country so large, this may be surprising.