What Is Illegal in Vietnam? Laws Tourists Should Know

Meta description: Learn what is illegal in Vietnam, including rules on drugs, vaping, visas, driving, photography, customs, and public behavior before traveling.

Vietnam is welcoming to visitors, but some rules differ sharply from those in the United States. Drug offenses can bring severe penalties, e-cigarettes are prohibited, and common travel activities such as flying a drone or taking photographs near security sites may require permission. Knowing what is illegal in Vietnam helps travelers avoid fines, confiscation, visa problems, or arrest. The rules below cover key issues for tourists; they are general information, not a substitute for current official guidance or legal advice.

Drug Laws Are Strict

Vietnam treats illegal drugs seriously. Possession, use, purchase, sale, transport, and trafficking can all lead to arrest and criminal prosecution. Penalties depend on the substance and quantity, and serious cases can result in lengthy imprisonment. Foreign citizenship does not exempt a traveler from Vietnamese law.

Do not carry drugs for another person, accept a package from someone you do not know, or assume that a small amount is tolerated. Prescription medicines also need attention: some products permitted in the United States may be controlled in Vietnam. Keep medicines in their original packaging, carry a copy of the prescription, and check with the Vietnamese Embassy or consulate before departure if a medication contains a controlled ingredient.

For a prescription that could raise questions, travelers should carry a doctor’s letter stating the medication’s name, dosage, and medical purpose. Bring only a reasonable amount for personal use. Rules can depend on the drug and the quantity, so advance confirmation is safer than relying on a general list.

E-Cigarettes and Heated Tobacco Products Are Prohibited

Vietnam’s National Assembly adopted a ban on e-cigarettes and heated tobacco products beginning in 2026. The measure covers the production, trade, import, storage, transport, and use of these products. Travelers should not bring a vape, e-cigarette, heated tobacco device, or related liquid into Vietnam, even if it is legal where they live. Do not assume that keeping a device in checked luggage makes it acceptable.

Traditional tobacco products are subject to separate rules. Smoking is prohibited in many public places, including specified indoor areas and public transport. Follow posted signs, use designated smoking areas, and do not smoke in enclosed spaces where it is banned. Regulations and enforcement can change, so check official Vietnamese government or embassy information before travel.

Check Visa Conditions and Entry Rules

Visitors must follow the conditions of their visa or visa exemption, including the permitted length of stay and any limits on work or other activities. Working while visiting as a tourist, overstaying, or doing an activity that requires a different authorization can lead to fines, detention, deportation, or difficulty returning.

Check that the passport details on the visa match the passport used for travel, and confirm the allowed entry dates and length of stay. Travelers who need to extend or change their status should contact Vietnamese immigration authorities or a qualified local adviser before their permission expires. An application in progress should not be treated as permission to remain.

Overstaying can cause problems even when the excess stay is brief. Keep a copy of the visa and entry documents, and allow time to resolve errors before departure. For official visa information, use the Vietnam Immigration Department’s e-visa portal or contact a Vietnamese diplomatic mission.

Driving Rules Can Catch Visitors Off Guard

Driving without the required license or documents is a common and potentially costly mistake. A U.S. driver’s license alone may not be sufficient. Vietnam recognizes certain international driving permits under the 1968 Vienna Convention, but the traveler must carry the permit together with the corresponding valid domestic license. Requirements can depend on the license category and vehicle, so confirm them before renting a car or motorcycle.

Rental companies may hand over a motorbike without verifying that a visitor is legally entitled to ride it. That does not make the trip lawful. If a rider lacks the correct license, insurance may not cover a crash, and the rider could face financial liability as well as a traffic penalty. Travelers should check their license, permit, and insurance terms before accepting a vehicle.

• Helmet use: Motorcyclists and passengers must wear helmets. A properly fastened helmet is essential for safety and compliance.
• Alcohol: Vietnam applies a zero-tolerance rule to driving after drinking alcohol. The safest choice is not to drive after consuming any alcohol.
• Mobile phones: Using a phone while driving may violate traffic rules and raises crash risk. Pull over safely before using one.
• Road rules: Obey signs, traffic officers, and local restrictions, and avoid assuming that informal road practices are legal.

Traffic regulations and fines can change. The U.S. Department of State’s Vietnam travel information advises visitors to review local requirements and safety conditions.

Drone Flights and Sensitive Photography May Need Permission

Drone use is regulated in Vietnam. Flights may require advance approval, and restrictions can apply near airports, military facilities, government buildings, borders, and other protected locations. A drone that is legal to fly at home may be confiscated or lead to penalties if brought into or operated in Vietnam without required authorization.

Travelers should not fly first and ask later. Check current requirements with Vietnamese authorities before bringing a drone, including rules for import, registration, flight approval, and permitted locations. Commercial filming may require additional permissions.

Photography is generally part of ordinary tourism, but photographing military sites, security installations, border areas, or restricted government facilities can create serious problems. Follow signs and instructions from officials. If an area appears restricted, do not take pictures or record video there. Avoid photographing security personnel or checkpoints without permission.

Customs Rules Cover Currency, Medicines, and Protected Goods

Vietnam has customs requirements for cash, valuables, medicines, and goods brought into or taken out of the country. Travelers carrying large amounts of cash or other regulated items may need to declare them. Because declaration thresholds and procedures can change, check current guidance from Vietnamese customs before travel rather than relying on an old online figure.

Do not assume that an item can be exported simply because it is sold in a shop or market. Wildlife products, products made from protected species, and certain cultural objects may be restricted or prohibited. Buying ivory, products made from endangered animals, or other wildlife souvenirs can contribute to illegal trade and may create customs or criminal consequences.

Antiques and objects that may qualify as cultural property can also be subject to export controls. Keep receipts and documentation for valuable purchases, and ask the seller and relevant authorities whether an export permit is required. If a seller cannot explain an item’s legal origin or export status, it is safer not to buy it.

Gambling, Sex Work, and Public Conduct

Gambling is regulated in Vietnam, and unauthorized gambling can lead to penalties. A visitor should not assume that an online betting site, private card game, or informal casino arrangement is lawful simply because it is accessible. Use only activities expressly permitted by local rules, and avoid carrying or transferring money for gambling operations.

Sex work and related activities are also subject to Vietnamese law and enforcement. Soliciting, arranging, or participating in illegal commercial sex can expose visitors to fines or other legal consequences. Exploitation, trafficking, and sexual activity involving minors are grave crimes. Travelers should never engage in conduct that exploits another person or violates age-of-consent and child-protection laws.

Public behavior matters. Disorderly conduct, fighting, property damage, or refusing lawful instructions from authorities can result in police involvement. Carry identification as required, remain calm during official interactions, and do not offer or pay a bribe. If detained, request contact with the U.S. Embassy or Consulate and a lawyer.

Political Activity and Online Content Require Caution

Vietnam restricts certain political activities, public demonstrations, and expression that authorities consider a threat to national security or public order. Foreign visitors should not assume that a demonstration is open to participation or that a political event is safe to attend. Avoid joining unauthorized gatherings, distributing political materials, or organizing public activities without checking the applicable rules.

Online posts and recordings can also attract scrutiny, especially when they concern government institutions, security matters, or political events. Laws and their application may differ from U.S. norms. Travelers should use good judgment, avoid sharing sensitive images or information, and follow instructions from local officials.

Alcohol and Age Restrictions

Alcohol is widely available, but rules prohibit selling or supplying alcohol to people under 18, and people under 18 are not permitted to drink under Vietnamese law. Public intoxication can also lead to safety problems or police attention, particularly if it involves disorderly behavior. Visitors should drink responsibly and never combine alcohol with driving.

Practical Ways to Stay Within the Law

• Check the latest entry, customs, medication, and transport rules with official Vietnamese sources before departure.
• Leave e-cigarettes, heated tobacco devices, and vape liquids at home.
• Carry valid identification and copies of important travel documents.
• Use a properly licensed driver or confirm that all required permits and insurance apply before driving.
• Ask before flying a drone, photographing sensitive locations, or exporting antiques and wildlife-related goods.
• Follow posted signs and lawful instructions, and seek qualified local help if a legal problem arises.

Vietnam’s rules can change, and enforcement may vary by location and circumstance. For U.S. travelers, the most reliable preparation is to check current information from the U.S. Embassy and Consulate in Vietnam, Vietnamese government agencies, and the airline before leaving. When a rule is unclear, choosing the more cautious option can prevent a minor travel decision from becoming a serious legal issue.