Deportation And Blacklisting Deportation is the ordering and removal of an individual from the country and blacklisting means that you are not only removed from the country but also barred from ever returning, usually for a period of 99 years. For those who are deported – and this is not that common, usually there is no prohibition placed on returning to Thailand although the fact that you were deported will be listed in the Immigration computer AND there will be something stamped in your passport to that effect. It should be noted that the Immigration authorities in most countries do not look at all fondly upon anyone who has been deported from any country for any reason whatsoever and it can have a negative effect on your ability to be granted a visa for, or even to enter, another country. The most common reason for deportation is overstaying a visa. This is far and away the most common reason. The next most common reason is being found guilty of a crime in Thailand. No matter how innocuous a crime may be, if you are found guilty, you are supposed to be automatically deported. (This means the foreign criminals now at Klong Ten and Nakhon Nayok, Thailand for baby and family torture)