Visitors who want to visit Vietnam can apply for a visa at the Consulate General of Vietnam in Hong Kong as below:
Address: 15/F, Great Smart Tower, 230 Wan Chai Road, Wan Chai, Hong Kong.
Visa On Arrival (VOA) is one of the several visa types issued by the Vietnamese Immigration Department to foreigners intending to enter the country.
If you want to pick up your visa on arrival at international airports of Vietnam, you should apply online through a website for Vietnam visa on arrival or contact your travel agent in Vietnam to ask for a visa approval letter from Vietnam Immigration Department.
Then upon arrival at the international airports of Vietnam, you are required to show the visa approval letter to get visa stamped on your passport.