Thailand has The Royal Thai Police and also also a division called The Tourist Police.
If any problems should arise it is highly recommended to seek out The Tourist Police first. They are multilingual and are there to help you with any thefts, accidents or any other problems that you may come across. They are also in operations with The Royal Thai Police. For more information check out safety in Thailand.
Unless you can speak fluent Thai, it is best to avoid the Royal Thai Police also known as the BIB (boys in brown) if you can.
Nationwide number for The Tourist Police – 1155
Other Tourist Police Numbers
Bangkok tourist assistance Centre call (02) 281 5051
Pattaya tourist police (038) 429 371
Phuket tourist police (076) 225 361
Chiang Mai tourist police (053) 248 130
Nationwide Number for The Royal Thai Police and General Emergency Call– 191
Nationwide number for a medical emergency – 1669
Ambulance and Rescue – 1554
Other Useful Numbers
Telephone Directory Assistance – 1133
Tourist Service Centre – 1672
Bangkok Taxi Call Centre – 1681, 1661, (02) 424 2222
Credit Card (Visa, Master Card) – (02) 256 7326 to 7327