Hello. If a Thai lady married to a foreigner changes her last name, does it affect the right of land ownership or causes deprivation of any of her rights?
TLDR : Answer Summary
Changing her last name after marrying a foreigner does not affect a Thai woman's land ownership rights or any of her legal rights, as long as she retains her Thai citizenship. Multiple commenters confirmed that name changes had no impact on property ownership and that any legal documents can be updated without loss of rights.