The processing time for Vietnam Visa dependents, through which mode you are applying for. If you are applying through :-

1. Vietnam Embassy/Consulate :- It took 3-7 working days or more ( It’s a lengthy and time taken procedure ) as some time you need to visit 2 times to Embassy.
2. Apply Online :- If you applying through online, the normal processing time is 2 business days. On Urgent, it would be 1 business day. For Super Urgent Services you get Visa Approval Letter within 4 working hours.