Vietnam allows nationals of 23 countries to enter Vietnam without a visa for varying time periods, most of the countries being members of the ASEAN. Citizens of the following 23 countries do not require visas for Vietnam
Citizens of China, Cuba and North Korea holding passports for public affairs or normal passports endorsed "for public affairs" do not require a visa for Vietnam.
Note that : For British passport holders, only holders of British citizen passports are eligible. Foreigners holding British National Oversea (BNO) passports are not exempted from visa requirement, thus must have appropriate visas to enter Viet Nam