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How to get a travel visa for vietnam 
Obtain a passport from your home country. 
If you do not already have a valid passport, you will need to get one before you apply for a visa to visit vietnam. Most state departments will require your birth certificate, proof of residence, headshot photos, a completed application, and the appropriate fee.
Some countries may require an in-person interview. Processing time will vary, but you should allow four to six weeks.