Yes, you may extend your Laos visa while in the country. Tourist visas in Laos can be extended for a total of 90 days. You must visit the Lao Immigration Department in Vientiane or the Immigration Division Office in the province where you are staying to extend your Laos visa. Bring your passport, a current passport photo, and a completed visa extension application form with you. You will also be charged a visa extension cost.
It is important to note that your Laos visa extension must be approved before your current visa expires. If you overstay your Laos visa, you will be subject to a fine and may be denied re-entry into Laos in the future.
Here are some tips for extending your Laos visa: