How many kinds of Vietnam visa are there?

 - Regarding traveling purposes, Vietnam visa is classified into 03 types:

   + Tourist Visa: valid for up to 3 months (except tourist visa for USA citizens valid for up to 1 year);
   + Business visa: valid for up to 1 year
   + Visa for other purposes: valid for up to 3 months


- Regarding length of stay and number of entries, Vietnam visa is classified into 06 types:

 1 month single entry visa
 1 month multiple entries visa
 3 months single entry visa
 3 months multiple entries visa
 6 months multiple entries visa
 1 year multiple entries visa.