A sham marriage is a marriage registered to obtain something the marriage unlocks, most often a visa, a residence card, naturalisation, or another benefit tied to being married, rather than to build a shared life. Vietnamese law treats it as unlawful, and it does so even when the wedding was real, the certificate is genuine, and the couple can produce photographs and a registration record. What makes a marriage a sham is the purpose behind it. The paperwork can be flawless and the marriage still unlawful.
The law here affects two very different groups of people. Some are weighing a marriage of convenience and want to know what they are exposing themselves to. Others are in a genuine cross-border relationship and are worried about being wrongly suspected of exactly that. Both are governed by the same rule, and the line between them is drawn by intention.
What Counts as a Sham Marriage Under Vietnamese Law
Vietnamese law has a specific term for this. Under Article 3(11) of the 2014 Law on Marriage and Family, a “fraudulent marriage” is a marriage that uses the registration of marriage to gain entry into Vietnam, to exit the country, to obtain immigration papers, residence, or naturalisation, or to enjoy some other benefit, rather than for the purpose of building a family.
The defining feature is the absence of a genuine intention to live together as a married couple. A real marriage, in the eyes of the law, is directed at a shared family life. A sham marriage uses the legal form of marriage without the shared life that is supposed to go with it. The two people may have completed every correct step, with nothing missing on paper except the one thing the law most cares about: the intention to build a family together.
Several things do not make a marriage a sham. An arranged marriage is not a sham marriage. A marriage between two people from very different backgrounds, or with a large age gap, or conducted quickly, is not a sham marriage. A marriage where one partner hopes to gain residence rights and actually intends to share a life is not a sham marriage either. The benefit can exist alongside a real relationship. What the law targets is the case where the benefit is the whole point and the family life was never intended.
Why a Sham Marriage Is Illegal Even if It Looks Valid
Entering into a fraudulent marriage is expressly prohibited. Article 5(2)(a) of the 2014 Law on Marriage and Family lists it among the acts that are forbidden, in the same provision that bans forced marriage, deceitful marriage, and obstruction of marriage.
This is why a sham marriage is on shaky ground from the very first day, regardless of how clean the registration looks. The prohibition attaches to the act of entering the marriage for a false purpose. The certificate does not cure that. It records a marriage the law did not permit, which means the marriage can be challenged and undone precisely because of how and why it was formed, not because of any error in the ceremony or the forms.
The Consequences of a Sham Marriage
The risks fall into several categories, and they are often underestimated because the arrangement feels safe while everyone involved is cooperating. The exposure usually surfaces later, when something changes, such as a falling-out between the parties, a residence renewal, or an official review.
- The marriage can be annulled. Because a fraudulent marriage is a prohibited marriage, it can be declared unlawful by the court. An annulment treats the marriage as invalid from the outset rather than ending a valid marriage, which is a different legal outcome from divorce and carries its own consequences for property and status. We explain this fully in our guide to the annulment of a marriage in Vietnam.
- Administrative fines. Using a marriage to exit, enter, reside in, or obtain Vietnamese nationality carries a monetary penalty under Article 59 of Decree 82/2020, along with an order to hand back any unlawful gain obtained through it. The person who benefits and any person who arranges or brokers the marriage can both be exposed.
- Loss of the benefit that motivated it. The visa, residence card, or status obtained through the marriage rests on a marriage that can be invalidated. If the marriage falls, the benefit built on it is at risk of being revoked, which can leave a foreign national without lawful status and facing removal.
- Consequences in another country. Where the marriage was used to obtain immigration benefits abroad, the foreign country’s own laws apply as well, and many treat marriage fraud as a serious immigration offence with penalties far heavier than the Vietnamese fine, including bars on future entry and, in some countries, prosecution.
- Discipline for officials involved. A state official or public employee who enters into or facilitates a sham marriage can face disciplinary measures under the rules governing public personnel (Decree 112/2020), on top of any other liability.
Taken together, these mean the arrangement is rarely the clean shortcut it is presented as. It creates a legal weakness that sits under everything built on top of it, and it hands each party a hold over the other for as long as the marriage stands.
What Happens if You Did Not Know the Marriage Was a Sham
Not every sham marriage has two willing participants. Sometimes one person marries in good faith, genuinely believing in the relationship, while the other was only ever after the visa, the residence card, or another benefit. Vietnamese law treats these two people very differently. A spouse who was deceived is a victim of the fraud, not a party to it, and the penalties described above fall on the person who used the marriage and on anyone who arranged it, not on the partner who was misled.
The law also gives the deceived spouse a direct remedy. Under Article 10 of the 2014 Law on Marriage and Family, a person who was deceived or coerced into marrying can ask the court to annul the marriage themselves, or have a person or organisation named in the law request it on their behalf. The ground is that their consent to the marriage was never freely and genuinely given, which is one of the basic conditions a valid marriage requires.
On annulment, the marriage is treated as never having validly existed (Article 12). Where there are children or shared property, the court settles those questions with particular regard for the lawful rights and interests of the deceived spouse and of any children, so that the innocent party is not left worse off for having been misled. If you suspect you were drawn into a marriage your spouse never intended as real, such as where they lose interest in a shared life the moment the certificate is issued and press only for immigration sponsorship, the practical step is to seek advice early and keep whatever shows that you believed the marriage was genuine. The sooner the position is clarified, the easier it is to protect your status, your property, and your children.
How Sham Marriages Are Detected
Authorities do not rely only on the paperwork. Where there is a foreign element, the registration process itself is designed to test whether the marriage is genuine, most visibly through the marriage interview, where the couple may be asked separately about their relationship, how they met, their life together, and basic facts about each other. Inconsistent answers, an inability to communicate in any shared language, or a clear lack of any real acquaintance are the kinds of signals that prompt closer scrutiny and can lead to registration being refused.
Suspicion can also arise later, at a residence renewal, during a review of immigration files, or when one party reports the other after the relationship between them breaks down. A marriage that was never genuine becomes considerably harder to defend once one of the two people involved has a reason to tell the truth about it.
What This Means for Genuine Cross-Border Couples
The same scrutiny that catches sham marriages can be stressful for couples whose relationship is entirely real. If you are in a genuine international relationship, the law is not against you, but the process may ask you to show that your marriage is what you say it is.
The practical response is preparation rather than worry. Keeping ordinary evidence of a real relationship, communicating truthfully and consistently at any interview, and completing each registration step correctly are usually enough to put the question to rest. The requirements for a foreign national marrying in Vietnam, including documents such as the certificate of no impediment, are set out in our guide on marrying a foreigner in Vietnam. Getting those steps right from the start is the surest way to keep a genuine marriage from being treated with unwarranted suspicion.
How to Avoid a Sham Marriage and Marry Legally in Vietnam
If you are considering a marriage of convenience, it exposes both parties to annulment, fines, loss of status, and, where another country is involved, consequences that can be far more severe than anything imposed in Vietnam. If you are in a genuine relationship and simply want it recognised without friction, the answer is to do each step properly and be ready to show your marriage is real.
Our team of family lawyers advises on both situations, from registering a genuine cross-border marriage correctly to resolving a marriage whose validity is in question. We have guided many foreign nationals, from a wide range of countries, through marriage and residence matters in Vietnam, and we can help you understand where you stand before a problem becomes harder to fix. Reach us at [email protected].
