Nevada doesn’t annul a marriage just because someone regrets it. There must be a specific legal ground. They fall into two groups: void marriages, which were never valid, and voidable marriages, which a court can undo when a ground is proven (NRS Chapter 125).
A void marriage is invalid from the moment it happens — the law simply never recognized it. Because of that, these grounds can generally be raised at any time.
Either person already had a living husband or wife at the time of the marriage. You can’t be validly married to two people at once, so the second marriage is void.
Example: you marry, then learn your spouse’s earlier divorce was never finalized.
The two people are related closer than second cousins — including relationships of the half-blood. Nevada treats such a marriage as void from the start.
In short: the family connection is too close for a valid marriage under Nevada law.
A voidable marriage is valid until someone asks a court to annul it and proves one of these grounds. These cover most Las Vegas “quick marriage” situations.
A party lacked the capacity to truly consent to the marriage.
This is the classic Las Vegas “we were way too drunk” situation. The law recognizes that real consent requires understanding what you’re agreeing to. Want of understanding can include:
If neither of you could really consent, there may never have been a true meeting of the minds.
One person concealed or misrepresented something central to the marriage.
Not every fib counts — the fraud has to go to the heart of what marriage is. Courts have recognized things like:
The question a court asks: was the deception central enough that real consent was impossible?
A party who was under 18 married without the consent of the parent or guardian that Nevada law required. The marriage can be annulled because the necessary consent was missing.
Marriage is also a contract, so general contract-law grounds can apply — for example, entering the marriage under duress (being forced or seriously coerced). If a contract could be voided in equity, the marriage may be too.
A note on timing. Void grounds (bigamy, close relatives) can generally be challenged at any time. Voidable grounds are best acted on promptly — continuing to live together after you learn the facts can weaken a claim. This is a general principle, not a deadline; an attorney can tell you how it applies to you.
This site provides general information about Nevada annulment law and is NOT legal advice. Using it does not create an attorney–client relationship. For advice about your situation, consult a licensed Nevada family-law attorney.
Whether your facts fit one of these grounds is exactly what a free consultation answers. No judgment, no obligation — just a clear read on your options.