Thailand, formally the Kingdom of Thailand, is a country in Southeast Asia. To its east lie Laos and Cambodia; to its south, the Gulf of Thailand and Malaysia; and to its west, the Andaman Sea and Myanmar. Its capital and largest city is Bangkok.

The country's official name was Siam (Thai: สยาม; IPA: [saˈjaːm], RTGS: Sayam origin unknown) until June 24, 1939. It was again called Siam between 1945 and May 11, 1949, when it was once more changed by official proclamation. The word Thai (ไทย) is derived from the word Thai (ไท) meaning "freedom" in the Thai language and is also the name of the majority ethnic group.

Central | Ang Thong | Bangkok (Krung Thep Maha Nakhon), Special Governed District of | Chai Nat | Kanchanaburi | Lop Buri
| Nakhon Nayok | Nakhon Pathom | Nonthaburi | Pathum Thani | Phetchaburi | Phra Nakhon Si Ayutthaya | Prachuap Khiri Khan | Ratchaburi | Samut Prakan | Samut Sakhon | Samut Songkhram | Saraburi | Sing Buri | Suphan Buri | Wat Sothornwararam, Chachoengsao Province

East | Chachoengsao | Chanthaburi | Chonburi | Prachinburi | Rayong | Sa Kaeo | Trat | Phra That Chae Haeng, Nan Province

North | Chiang Mai | Chiang Rai | Kamphaeng Phet | Lampang | Lamphun | Mae Hong Son | Nakhon Sawan | Nan
Phayao | Phetchabun | Phichit | Phitsanulok | Phrae | Sukhothai | Tak | Uthai Thani | Uttaradit | Phra That Phanom, Nakhon Phanom Province

Northeast |Amnat Charoen | Buri Ram | Chaiyaphum | Kalasin | Khon Kaen | Loei | Maha Sarakham | Mukdahan | Nakhon | Phanom | Nakhon Ratchasima | Nong Bua Lamphu | Nong Khai | Roi Et | Sakon Nakhon | Si Sa Ket | Surin | Ubon | Ratchathani | Udon Thani | Yasothon | Phra Boromathat Chedi or Phra That Nakhon, Nakhon Si Thammarat Province

South |Chumphon | Krabi | Nakhon Si Thammarat | Narathiwat | Pattani | Phang Nga | Phatthalung | Phuket | Ranong | Satun | Songkhla | Surat Thani | Trang | Yala

Source: wikipedia.org