Where can I apply for the Thai DTV visa while in Vietnam?

You apply online, but you will still have to be in the same country as the Embassy, until you get your visa.



But you have to start by reading the Thai Embassy website thoroughly before you apply, since there is important info, you need to know and understand before applying.

It’s an online process. There will be no sticker in your passport. They will, once your application is approved, send you a pdf file by email. That will be your visa. Keep it, print it out, and show it to the immigration officer when you enter Thailand.

You can apply from Vietnam. I think from your location it will be via the HCMC consulate but you need to check that on the eVisa site. It gives a list of places in Vietnam and which embassy/consulate you need to apply to.

Proof of current location is required; your entry stamp to Vietnam, your hotel or lodging booking.

You need to stay in Vietnam until your application is processed.

The application is online, the e-visa is a PDF file emailed to you. All Thai visa applications are now online. When logging on to the system you state your current location, the responsible consulate or embassy according to your location will be displayed. I'd wait a month or two.