COVID-19 negative certification required for entering the country. Transiting through Cambodia and staying in the airport (airside) is not currently permitted. If you are transiting through Cambodia on your way to another country and will be passing through immigration (sometimes known as a layover), for example to stay in a hotel for a flight the next day, you need to meet the entry requirements applicable to your vaccination status.
COVID-19 negative certification required for entering the country. All travellers to Cambodia will be tested on arrival. All foreigners arriving in Cambodia will now be subject to a COVID-19 test on arrival (as well as requiring a COVID negative test before flying- no more than 72 hours). You will need to remain at a hotel or government facility until the results are known.