Which capital city has the world's longest ceremonial name?

Bangkok is the capital city with the world’s longest ceremonial name. Its full traditional name is commonly rendered in English transliteration as Krung Thep Maha Nakhon Amon Rattanakosin Mahinthara Yuthaya Mahadilok Phop Noppharat Ratchathani Burirom Udomratchaniwet Mahasathan Amon Piman Awatan Sathit Sakkathattiya Witsanu Kamprasit.

The name is a highly formal poetic description of the city, drawing heavily on Pali and Sanskrit vocabulary. It refers to a great city of angels, the seat of the king, and a city filled with divine and splendid places. In everyday Thai, people usually use Krung Thep, meaning “City of Angels,” while Bangkok remains the familiar international name.

The ceremonial name is often counted as 168 letters in the Guinness World Records version, although transliteration systems can produce slightly different spellings and lengths. Rome, Tokyo, and London have historically important names, but none has a comparable official ceremonial form.