The Ministry of Foreign Affairs and International Cooperation has launched e-Visa, which enables you to apply for a Cambodia tourist visa online. Instead of applying through Cambodian Embassy, all you need to do is to complete the online application form and pay with your credit card. After receiving your Visa through email, print it out and bring it along when you travel to Cambodia.
 

Entry Type		Single entry only
Fees		USD20 + USD5 (processing charge)
Validity		3 months (starting from the date of issue)
Length of Stay		30 days (more)
Processing Time		3 business days
Requirement		A passport validity of more than six months balance at time of entry, a recent passport-size photo in digital format (JPEG or PNG format), a valid credit card (Visa/MasterCard/American Express/Discover).
Visa Exemption		Laos, Malaysia, Philippines, Singapore, Vietnam
Countries not supported		Afghanistan, Algeria, Arab Saudi, Bangladesh, Iran, Iraq, Pakistan, Sri Lanka, Sudan (Please apply your Visa from your nearest embassy or on-arrival at all major checkpoints)
Name of Port   (View Map) Border Entry Exit Phnom Penh International Airport - Yes Yes Siem Reap International Airport - Yes Yes Cham Yeam (Koh Kong) Thailand Yes Yes Chorm (Oddar Meanchey) Thailand No Yes Daung (Kamrieng-Battambang) Thailand No Yes Poi Pet (Banteay Meanchey) Thailand Yes Yes Prom (Pailin) Thailand No Yes O Smach (Oddar Meanchey) Thailand No Yes Bavet (Svay Rieng) Vietnam Yes Yes Kaoam Samnor (Kandal-Mekong) Vietnam No Yes Phnom Den (Takeo) Vietnam No Yes Trapaing Sre (Kratie) Vietnam No Yes Dong Kralo (Stung Treng) Laos No Yes Sihanoukville - No Yes   Yes (Supports e-Visa); No (Does not support e-Visa)     Business Visa, K-Visa and Diplomatic Visa   For those who wish to apply Business Visa, K-Visa or Diplomatic Visa, please contact your nearest Cambodian Embassy for more information. We are unable to accept applications from holders of Diplomatic Passports.