There are main four types of Visas to visit Vietnam :-

Tourist Visa :- This type of Visa is required, if you are planning for Travelling and Exploring in Vietnam.

Business Visa :- This type of Visa you need to do some Business in Vietnam.

Work Visa :- Work Visa is required, if you are planning to do Jobs/Work in Vietnam.

Student Visa :-This Visa is for Students, who are looking for further studies in Vietnam.