Can I return to Thailand with a single-entry tourist visa after going back to my country?

If you hold a single-entry tourist visa for 60 days, you cannot re-enter Thailand on the same visa after leaving the country since it is considered 'used' once you stamp in. However, you can apply for a re-entry permit for 1,000 THB at any immigration office if you plan to leave and come back before your visa expires. This permit allows you to return without losing your current permission to stay, but it will not extend your original visa duration. If you extend your visa for an additional 30 days, you can still apply for a re-entry permit.