THAILAND. "Bangkok is a city of extremes and superlatives, a city you do not react to indifferently," says Thailand at a Glance. "Recently declared the world's hottest city by the World Meteorological Organization, it also boasts the world's longest name:
Krung-thep-maha-nakorn-boworn-ratana-kosin-mahintar- ayudhya-amaha-dilok-pop-nopa-ratana-rajthani-burirom-udom-rajniwes-mahasat-arn-amorn-pimarn- avatar-satit- sakattiya-visanukam.
"Not surprisingly, only a handful of Thais can remember such a mouthful, although the abbreviated translation of the whole is a relatively brief Jewelled city of the god Indra. However, most Thais simply refer to it as Krung Thep, City Angels."
We sought a ruling from a Bangkok wordsmith, Theppitak Karoonboonyanan who said the correct spelling (163 letters) is
Krungthepmahanakornamornratanakosinmahintarayutthayamahadilokphop
nopparatrajathaniburiromudomrajaniwesmahasatharn
amornphimarnavatarnsathitsakkattiyavisanukamprasit.
Theppitak separated the words of K161t and translated them as:
krungthep mahanakorn
The great city of angels,
amorn rattanakosin mahintara yutthaya mahadilok phop
the supreme unconqueralble land of the great immortal divinity (Indra),
noparat rajathani burirom
the royal capital of nine noble gems, the pleasant city,
udomrajaniwes mahasatharn
with plenty of grand royal palaces,
amorn phimarn avatarnsathit
and divine paradises for the reincarnated deity (Vishnu),
sakkatattiya visanukam prasit
given by Indra and created by the god of crafting (Visnukarma).
"It's a kind of honoring or celebrating in (royal) Thai culture to name long (I couldn't confirm this in terms of historical background, though)," Theppitak said. "King Rama 1, the founder of the city himself, was named yet longer than the name of the city, in his ascending to the throne. Our King Rama 9 (King Bhumipol) also has a long name of a hundred letters.
"The name of the city was given by King Rama 1, the founder of the city, to celebrate the new capital, 219 years ago, after Sukhothai, Ayudhaya, and Thonburi. He moved the capital of the country from Thonburi to a place called Bangkok at that time, and named the new capital as rungthepmahanakhorn. The name has been changed a little by King Rama 4 (King Mongkut) which has been used until now.
"The name Bangkok is still used in international context because it was more familiar to foreigners in the past. In Thai, the city is called Krungthep in short, and is written with an abbreviation sign after it.
"It may be pronounced as Krungthepmahanakorn in some formal occasions. But when we refer to the full name, it's the one with hundreds letters as mentioned. If you want to get some formal evidence of the name, you may have to ask some governmental offices, or the Royal Palace.The old name Bangkok is only used in foreign languages, or it becomes informal in Thai."
VERDICT. Well, what to make of these claims and counter-claims? To this impartial observer, who has visited the multisyllabic places only on the Internet, the result is:
* Third longest place name (bronze medal): WALES.
* Second longest (silver medal): NEW ZEALAND.
* Gold Award winner THAILAND.
This is from another sorce, has anyone got a Guinness book of records.
Pete 
