The Thames River, also known as the Thames, is an iconic river flowing through the heart of London. Besides its official name, it has been referred to by many synonyms over the years. Some of the common synonyms include the River Thames, the Tideway, and the Greater Thames. In historical references, it has been called the City of London's River, while the Romans called it Thamesis. Other nicknames for the Thames River include the River of London, the Silver Thames, and the Isis. As one of the most famous and important rivers in the world, it is no surprise that it has acquired numerous names and synonyms throughout history.