Should I be concerned about my middle name discrepancy when applying for the DTV in Thailand?

I did not have problems related to this.

But it is wise to check it out.

A dear friend of mine got the visa (and 350$) cancelled cuz of that name thing. He's asian so he got 2 names, well, he put is first name in given name and his second name as middle name like ALL the English official government websites claim. Long story short, the embassy said that he has 2 given names and no middle name so his money was lost. When he pointed out that ALL the English websites claim to fill in the way he did, they just replied saying that the visa isn't refundable and he accepted that right before applying for it. Do you want good advice? Take a picture of your passport and mail the embassy asking them how to fill in their form, that's gonna probably save u over 300$ and a bad time.

I've never heard of this, but I've also heard and seen some weird things with embassies doing nonsensical things.

What embassy are you applying out of?

That’s not a thing. My bank doesn’t have my middle name. As a former mortgage broker, I’ve seen 1000’s of statements, and it’s very rare.

This is not the reason they were declined.

It was probably some obscure embassy with little to no experience with the DTV, highly unlikely a western world embassy would be so strict.

Up to you but rejections usually don't explain why so it may have been a (bad) guess. Fill the application in as required but do check each page carefully as the system has been known to change the passport information entered especially middle names and birthdates. Most people don't use their middle names for everyday things so your bank accts shouldn't be an issue

I was fine without my middle name on my checking account.