If your spouse is also looking to retire in Thailand and is not a Thai citizen, and they meet all the above eligibility requirements, they will be able to qualify for the Thai Retirement Visa.
If your spouse is below 50 years of age or does not qualify for the Retirement Visa, they can still join you on your journey by applying for a Thai Dependent Visa.
This visa is renewable on an annual basis
The visa will be canceled the moment you and your spouse have filed for a divorce
The following requirements need to be met:
Your spouse will need a passport with a remaining validity of at least 6 months
You will need to provide proof of relationship documents (such as a marriage certificate)
You will need to demonstrate that you can support your spouse (this can be achieved by providing proof of financial documents)