If the Laos e-Visa application is rejected, can Vietnamese citizens apply again?

Yes. Vietnamese citizens can apply for a Laos visa again if their application is rejected.

Here are some common reasons why your application is denied:

You provide inaccurate information. If there is unmatched information between the application form and the passport, your application will be rejected
Your passport expired. Your passport must be valid for at least 06 months from the intended arrival date in Laos. Please check your passport’s validity before beginning the application process.