Most nationalities require a visa to enter Cambodia, except for some Asian countries like the Philippines, Malaysia, and Singapore.
Visitors from the United States, Australia, Canada, United Kingdom, and other European Union country members are required a visa which can be issued on arrival in any international airports in Cambodia.
Nationals from the following countries, however, would need a visa prior to arriving in the country: Afghanistan, Algeria, Bangladesh, Iran, Iraq, Pakistan, Saudi Arabia, Sri Lanka, and Sudan. They are required as well to have a letter of invitation from a Cambodian sponsor, as well as a return ticket.
For nationals of countries not listed above, it is recommended that they address their inquiry to the Cambodian Embassy in their respective countries.
Requirements for Issuance of a Cambodian Visa
The following are the requirements for getting a visa on arrival in Cambodia:
• 4 x 6 color photo (1 piece)
• Fee of US$20 for a 30-day tourist visa
• Fee of US$25 for a 30-day business visa
• Passport with at least a six-month validity
Electronic visas (E-Visa) are also available through the Cambodian Ministry of Foreign Affairs & International Cooperation, payable by credit card and accepted in five major entry points (Siem Reap and Phnom Penh international airports, and the Bavet/Moc Bai, Poipet/Aranyaprathet, and Koh Kong/Had Lek border crossings.).
There were reports, however, of the site being frequently down, as well as the proliferation of websites selling fake E-Visas. Utmost care is recommended if one decides to get the visa online.