Can I apply for a marriage visa in Thailand with a visa exemption stamp?

You have to prove you are single, therefore free to marry. Also, get the requirements handout from the office where you apply. They may want more, they may want less.

The Non Imm O is the marriage visa.

Get the non-o before you come then you can open a bank account

I converted a 60-day exemption stamp into a Non-O visa and recently had the 1 year marriage extension stamped in my passport. Do you know if you can get a bank account on the initial 90-day Non-O? The money only had to soak in the account for 60 days for me, but I already had a Thai bank account I got years ago.

Non-O is a bit of catch all, the O stands for Other, so it covers marriage, dependant and retirement options. Probably others too that don't immediately come to mind, the requirements vary depending on the reason you apply. But to get one inside Thailand you do need a Thai bank account with whatever funds they require in it, it's not totally impossible to get a bank account on a tourist entry but it's certainly very difficult. It's much easier to get the Non-O for your chosen reason before coming to Thailand and if you are already here it would be worth travelling to a country in the region that will allow you to use your home bank funds and applying for the Non-O there.

If you don't have the Thai Bank account, I don't think you can't apply in Thailand unless your countries' embassy in Thailand gives out a affidavit confirming your income.

And I hear some Immigration offices are not accepting this affidavit for Non-O based on marriage anymore.

Better to get your Non-O back in your home country, and get the bank account when you arrive so you can set yourself up for getting a extension of stay.

@John ********

However, your problem is, you cannot open a Thai bank account on a tourist visa or visa-exempt entry. You need the bank account, because you have to use the deposit method (since your embassy does not issue any income affidavits)

yes you can do the "change of visa type" on Immigration, If you want to "change" to the 90-days Non-Imm-Family Visa" (married to a Thai partner) then the requirements are listed under number 6 here:

You can, but as everything has turned out now, you’ll need to go through an agent to be able to open a bank account to prove that you fulfil financial requirements for a Non O visa based on marriage. Better odds to do as Graham advises you.

Agencies are in business and want you to pay for as many of their services as they can. So yes you can do it this way, but you will end up paying a lot for these services and likely have to use their services every year thereafter. Much easier and cheaper to get the non O before you come to Thailand. You will also then have no problem opening a bank account, as you have a long term visa, instead of being a tourist.

Why don't you get your Non-O Marriage Visa before you travel to make what follows much easier?