1. Generally, a foreign citizen who wishes to enter the Kingdom of Thailand is required to obtain a visa from a Royal Thai Embassy or a Royal Thai Consulate-General. However, nationals of certain countries do not require a visa if they meet visa exemption requirements as follows:
(1) they are nationals of countries which are exempted from visa requirements when entering Thailand for tourism purposes. Such nationals will be permitted to stay in the Kingdom for a period of not exceeding 30 days. For more information, please see Summary of Countries and Territories entitled for Visa Exemption and Visa on Arrival to Thailand .
(2) they are nationals of countries which hold bilateral agreements with Thailand on the exemption of visa requirements. For more information, please see Summary of Countries and Territories entitled for Visa Exemption and Visa on Arrival to Thailand .
2. Nationals of certain countries may apply for visa upon arrival in Thailand. Travellers with this type of visa are permitted to enter and stay in Thailand for a period of not exceeding 15 days. For more information, please see Summary of Countries and Territories entitled for Visa Exemption and Visa on Arrival to Thailand .
3. Travellers travellling from/through countries which have been declared Yellow Fever Infected Areas must acquire an International Health Certificate verifying the receiving of a Yellow Fever vaccination. For more information, please see List of Countries which are Declared Yellow Fever Infected Areas.
4. Nationals of certain countries are required to apply for a visa only at the Royal Thai Embassy or the Royal Thai Consulate-General in the applicant’s country of residence, or at the Royal Thai Embassy which has jurisdiction over his or her country of residence. Travellers are advised to enquire about authorised office for visa issuance at any Royal Thai Embassy or Royal Thai Consulate-General before departure. Contact details and locations of Royal Thai Embassies and Royal Thai Consulates-General are available at www.mfa.go.th/web/10.php.
5. To apply for a visa, a foreigner must possess a valid passport or travel document that is recognised by the Royal Thai Government and comply with the conditions set forth in the Immigration Act of Thailand B.E.2522 (1979) and its relevant regulations. In addition, the visa applicant must be outside of Thailand at the time of application. The applicant will be issued with a type of visa in accordance to his or her purpose of visit. For more information on types of visas and general requirements for each type of visa, please see Types of Visa and Issuance of Visa.
6. In general, applicants are required to apply for a visa in person. However, Royal Thai Embassies and Royal Thai Consulates-General in some countries and in some cases may also accept applications sent through representatives, authorised travel agencies or by post. Please enquire at the Royal Thai Embassy or Royal Thai Consulate-General where you intend to submit your application of acceptable ways of application.
7. Please note that the period of visa validity is different from the period of stay. Visa validity is the period during which a visa can be used to enter Thailand. In general, the validity of a visa is 3 months, but in some cases, visas may be issued to be valid for 6 months, 1 year or 3 years. The validity of a visa is granted with discretion by the Royal Thai Embassy or Royal Thai Consulate-General and is displayed on the visa sticker.
8. On the other hand, the period of stay is granted by an immigration officer upon arrival at the port of entry and in accordance with the type of visa. For example, the period of stay for a transit visa is not exceeding 30 days, for a tourist visa is not exceeding 60 days and for a non-immigrant visa is not exceeding 90 days from the arrival date. The period of stay granted by the immigration officer is displayed on the arrival stamp. Travellers who wish to stay longer than such period may apply for extension of stay at offices of the Immigration Bureau in Bangkok, located at Government Center B, Chaengwattana Soi 7, Laksi, Bangkok 10210, Tel 0-2141-9889 or at an Immigration office located in the provinces. For information on application for extension of stay, see the Immigration Bureau website at www.immigration.go.th
For more information please visit: http://www.mfa.go.th/main/en/services/4908/15405-General-information.html