Visas are required but are dead easy to obtain and we recommend that you make use of the e-visa link on our website. This will link you directly to the Cambodian Ministry of Tourism where you will be required to upload a passport photograph (it can be taken with a cell phone camera); copy of your passport details and transfer (EFT) US$36 in payment. Your visa should be emailed back to you within three days.
Alternatively, you can stand in a line at Arrivals in Cambodia with a couple of passport photos and buy it there. This will cost you US$30. Your passport must have blank pages and have at least six months before expiry and your visa will be valid for 30 days.