How to read a Vietnamese address, slashes and all

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The first Vietnamese address that stops a visitor usually looks like a typo: 127/3A Nguyen Trai, Phuong 7, Quan 5. Nothing about it is wrong. It is a precise set of instructions, and it reads from the smallest thing to the largest.
Learn the slash and the rest falls into place.
What are the parts?
Smallest first, which is the opposite of the order an address takes in English. The house comes before the street, the street before the ward, and the city goes last.
| Part | Example | What it means |
|---|---|---|
| House and alley | 127/3A | Number 3A inside the alley at 127 |
| Street | Nguyen Trai | The road the alley opens onto |
| Ward | Phuong 7 | The ward, sometimes numbered, sometimes named |
| District | Quan 5 | Urban district; huyen is the rural equivalent |
| City or province | TP.HCM | Thanh pho means city; tinh means province |
So the address above is read backwards from the way it is written: Ho Chi Minh City, District 5, Ward 7, Nguyen Trai street, gate 127, house 3A inside.
What exactly does the slash do?
The slash moves you off the main road. A single slash means one alley: 127/3A sits inside the lane whose mouth is beside building 127.
Two slashes mean an alley off that alley. 127/3/5 is real and common, and each step is a smaller, quieter lane. Three is not unusual in the older parts of Ho Chi Minh City, where whole neighbourhoods live behind a single street number.
The lane itself is a ngo in the north and a hem in the south. Both mean a passage too narrow for a car and wide enough for two motorbikes to pass — which is why so much of Vietnamese life happens in them, and why a bike taxi reaches doors a car never will.
Why does the taxi stop in the wrong place?
Because the map pin and the door are different things. Mapping apps frequently place an alley address at the mouth of the alley, or on the main street entirely, and a car cannot follow you in anyway.
The routine that works: give the driver the main-street number, get out there, and walk. Two hundred metres of alley is normal. If the place is a hotel or a homestay, ask them for a landmark rather than a number — the pho shop on the corner, the blue gate, the school — because that is how people here actually navigate.
Is Google Maps enough?
For main streets, yes. For alleys, it is often close rather than correct, and for anything built in the last year it may not exist. Vietnamese people use it too, and they also ask.
Asking works better than it sounds. Show the written address, and somebody will point, walk you to the corner, or call the number for you. That is not unusual generosity, it is the normal way an alley address gets found — the language guide has the two phrases that make it easier.
What about the street names themselves?
The street names repeat across the country. Every city has a Le Loi, a Tran Hung Dao and a Nguyen Hue, because the streets are named after the same national figures. That is why the district is not optional when you write an address down or hand it to a driver.
Tones make them hard to say. Show the name on a screen rather than pronouncing it, especially for the ones foreigners mangle most: Nguyen, Ly Thuong Kiet, Xo Viet Nghe Tinh. Nobody minds, and it saves five minutes.

Where does this bite hardest?
Booking accommodation, and arriving at night. A room advertised as being on a famous street may sit four turns into a hem behind it. That is quiet, cheap and completely fine by daylight, and a different proposition at midnight with a suitcase. The where to stay guide covers what to check before booking; the address is part of that.
The other place is deliveries and pickups. When a driver phones and you cannot explain where you are, send a pin from where you are standing rather than the address, and stand where a motorbike can see you.
FAQ
What does the slash in a Vietnamese address mean?
It marks an alley. In 127/3A Nguyen Trai, 127 is the gate on the main street, 3A is the house inside the alley behind it. More slashes mean more turns: 127/3/5 is an alley off an alley.
What is a ngo or a hem?
The same thing in different dialects — a lane too narrow for a car. Ngo is the northern word and hem the southern one, and both take their number from the building on the main road they run beside.
Why can a taxi not find the address?
Because the pin often sits on the main street while the door is 200 metres inside a lane. Send the driver the number on the main road, walk the alley yourself, and expect a bike to be able to do what a car cannot.
Do house numbers run in order?
On the main streets, roughly, with odd and even on opposite sides. Inside alleys the order is looser and renumbering has happened more than once, so a 15A can sit between 9 and 11 without anybody thinking it strange.
What do the other parts mean?
Phuong is a ward, quan a numbered urban district, huyen a rural district and tinh a province. Addresses run smallest to largest, the opposite of the British order, ending with the city.
How should you give an address to a driver?
Show it written or on a screen rather than saying it. Tones make spoken street names hard to catch, and a name like Ly Thuong Kiet exists in most cities, so the district matters as much as the street.
Is Google Maps reliable?
For main streets, yes. For alley addresses it is often close rather than right, and for a new building it may be a year behind. The last fifty metres are usually solved by asking somebody, and people will walk you there.