Can I change my Non-Immigrant visa to a new employer in Thailand without leaving the country?

Yes, it is possible to change your Non-Immigrant visa (Non-B) to a new employer without leaving Thailand. You will need to obtain the necessary documents from both your old and new employers. While some users suggested that it might depend on the immigration officer's discretion, others have successfully transferred their visa under the new employer's name through proper communication and documentation. It is often recommended to handle the cancellation of your current visa and apply for a new one without exiting the country, but if that's not feasible, going to a nearby country to obtain a new visa might be a better option.