Please note that all travelers, except for those exempt from visa requirement, should apply for the corresponding visa at the local Thai Diplomatic or Consular Offices before their arrival. People in possession of a valid residence permit or a valid long-term visa should check the validity of their visa in order to avoid any inconvenience.
Citizens of some countries , holding valid passports or travel documents, are entitled to visit Thailand for the purpose of pleasure for a period of 30 days without applying for a visa. Citizens of some countries can apply for a visa upon arrival. However, please check with the Royal Thai Embassy nearest to you.
If an entry visa is required, please allow sufficient time for this procedure:
Submit your visa application in person, at least three months before you plan to travel to Thailand in order to avoid any inconvenience. The process may take longer in certain countries, so we recommend that you contact the nearest Thai Diplomatic or Consular Offices to determine your personal case.
For more information visit the Ministry of Foreign Affairs, Kingdom of Thailand