Language 

- Vietnamese is the official language. 

- Almost tourist guides speak languages: English, Chinese, French, Russian and Japanese. 

Currency 

Vietnamese dong (VND) is the official currency in Vietnam

- Paper notes include: VND 500,000; 200,000; 100,000; 50,000; 20,000; 10,000; 5,000; 2,000; 1,000; 500; 200 and 100. Coins include VND 5,000; 2,000; 1,000; 500 and 200. 

Cheques with value as Vietnamese dong include: VND 1,000,000 and 500,000. 

- Foreign currencies and tourist cheques can be exchanged into Vietnamese Dong at banks or foreign exchange agencies. 

- Credit cards are popularly used, especially in cities and big tourist centers. 

Before leave Vietnam, Vietnamese dong can be changed into foreign currencies at the airport.

Source: ucviettravel.com