If you are a foreigner and want to travel in Myanmar, you will need a visa. We made a search and were told that foreigners have to apply in person at the Myanmar embassy in Bangkok.
Turn By Turn direction to Bangkok Myanmar Embassy by OnTheRoad.
Opens at 9. There will be a line already. It was very short for me, but arriving early would always be good.
Go to Surasak BTS. You can see the Blue Elephant Cooking School down there. More …
The process is quite easy.
1) Bring pictures and a valid passport, at least 6 months. You must also have a copy of your passport. If not, they will charge 5 baht per photocopy.
Now, I saw on some website that you can do it online:
But their information is false. I got my visa same day I applied and it was not difficult.
Embassy of the Union of Myanmar
Address : 132, SATHORN NUA ROAD, BANGKOK 10500
Tel : (662) 233-2237, 234-4698, 233-7250, 234-0320, 637-9406
Fax : (662) 236-6898
Source and More info at : http://www.isaan.com/en/forum/Legal-and-Financial-/2763-Myanmar-(Burma)-visa-in-Bangkok.html