Qatar Capital is the city of Doha, which has four letters. Doha is the capital and largest city of Qatar, located on the coast of the Persian Gulf. It is a modern metropolis with a population of over 1.5 million people. Doha is an important financial center in the Middle East and is home to many international organizations, including the United Nations. The city is also known for its vibrant culture, with many museums, art galleries, and cultural centers.