Updated September 2026
Bangkok is the capital of Thailand. Its Thai name is Krung Thep Maha Nakhon, usually shortened to Krung Thep. These names refer to the same city on the Chao Phraya River in central Thailand.
Bangkok has been the capital since 1782, when King Rama I established his seat on the river’s eastern bank. Today it is the country’s main centre of government, finance, commerce and transport. For travel planning, I keep the two common names together: Bangkok is familiar in international bookings, while Krung Thep Maha Nakhon can appear in Thai addresses and location labels.
Is the capital called Bangkok or Krung Thep?
Both names are used. The distinction is between forms of the city’s name, not different capitals:
- Bangkok is the widely used international name.
- Krung Thep Maha Nakhon — กรุงเทพมหานคร is the formal Thai name.
- Krung Thep — กรุงเทพฯ is the everyday shortened Thai form, commonly translated as “City of Angels.”
Reports about official naming changes in 2022 caused confusion, but Bangkok did not stop being an accepted name. You can still use it when searching for flights, accommodation or information in English.
The city also has a much longer ceremonial name. It contains religious and royal references, including the Emerald Buddha, divine figures and the royal palace. That ceremonial title explains the famous discussions of Bangkok’s long name; it is not the address you need to recite to a driver.
For a taxi journey, the useful details are your destination’s Thai name, street address and map pin. “Bangkok” or “Krung Thep” identifies a large city, not the particular hotel or temple you want.
When did Bangkok become the capital?
The key year is 1782. King Rama I, founder of the Chakri dynasty, moved the royal capital from Thonburi to the opposite, eastern bank of the Chao Phraya. The Grand Palace became the centre of the new royal city, in the area now associated with Rattanakosin.
Bangkok’s history as a settlement is older than that date. Saying it became the capital in 1782 does not mean the riverbanks were previously uninhabited.
To put the change in context:
- Ayutthaya was the earlier capital of Siam until its destruction in 1767.
- Thonburi became King Taksin’s capital after Ayutthaya fell.
- Bangkok’s Rattanakosin capital was established under Rama I in 1782.
Thonburi is now part of Bangkok, so these last two places are much closer together than a list of former capitals might suggest. The Chao Phraya separates the historic royal centres; it does not divide two present-day national capitals.
Sukhothai is another important earlier kingdom and capital in Thai history. Chiang Mai was the capital of the northern Lanna kingdom. Neither is Thailand’s present capital, and their histories should not be compressed into a simple list of interchangeable modern capitals.
Where is Bangkok?
Bangkok lies in central Thailand, on the lower Chao Phraya River, north of the Gulf of Thailand. The modern city extends across both banks. It is separate from northern destinations such as Chiang Mai and from the southern island destinations of Phuket and Koh Samui.
The Bangkok Metropolitan Administration governs the capital, which is divided into 50 districts. The wider urban area extends into neighbouring provinces. That is why population figures can look very different: a registered population within administrative boundaries is not the same measure as everyone living in the wider metropolitan area.
I would use the district and nearby transport links when choosing where to stay. A hotel near the Grand Palace serves a different part of a visit from a hotel around Siam or along Sukhumvit. The city name alone tells you little about the journey between them.
Which airport serves Thailand’s capital?
Bangkok is served by two major airports:
- Suvarnabhumi Airport — BKK. This airport is east of the city, in neighbouring Samut Prakan province.
- Don Mueang International Airport — DMK. This airport is on the northern side of Bangkok.
They are separate airports, not terminals of one airport. If a connection changes from BKK to DMK, you need a ground transfer and must account for the next flight’s check-in requirements. Check the airport code on every flight before booking an airport hotel or arranging a pickup.
What shows Bangkok’s role as the capital?
The Grand Palace and Wat Phra Kaew, the Temple of the Emerald Buddha, are the clearest starting points for its royal history. Wat Pho is nearby, while Wat Arun stands across the river on the Thonburi side. Seeing their locations makes the history of the two riverbanks easier to understand.
The city also contains government institutions, universities, business districts, markets and residential neighbourhoods. A visit need not be limited to the palace area. For help choosing specific stops and understanding their admission arrangements, see our guide to what to visit in Thailand. If you are combining the capital with other regions, our Thailand route guide explains how to choose the other bases.