I will marry a Thai woman next month, how will I be able to stay in Thailand? Can I have a Thai nationality?
The Marrying a Thai national would enable you to apply for a long term visa on a Marriage visa. There are certain requirements that the foreign spouse needs to meet in order to proceed with the application such as providing financial requirement of either 400,000 THB on a Thai bank account or monthly income in the amount of 40,000 THB or even the combination of both the money in the bank and annual income equivalent to 400,000 THB.
This type of visa can be renewed each year without the need of leaving the country as long as requirements are met. Yet, being married with a Thai spouse does not mean that you can get a Thai nationality. There is a specific process for doing so and you may need to apply first for a Permanent residency, then eventually applying for the Thai citizenship.