The Texas judge going viral for all the wrong reasons has even more problems ... he's facing fines for missed filings with the Texas Ethics Commission.

Judge Nathan J. Milliron -- who sits on the bench of the Texas 215th District Court -- is listed as delinquent on two separate required filings with the Texas Ethics Commission ... according to KPRC 2 in Houston.

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Milliron reportedly failed to submit campaign finance and personal financial disclosure reports ... and he's facing a $1,500 in fines as a result.

The Texas Ethics Commission told KPRC 2 the filings "are designed to ensure accountability and allow the public to identify potential conflicts of interest."

Unclear how long Milliron has reportedly been listed as delinquent.

The judge went viral this week over a video of him belittling an IT worker ... and when an attorney suggested he apologize for being rude, he demanded the attorney appear before him in court.

Milliron was voted into his position and began a 4-year term in early 2025.

We've reached out to Judge Milliron for comment ... so far, no word back.