How Vietnamese names work
The family name comes first, the name you use comes last, and almost everyone seems to be called Nguyen.
The order: family, middle, given
A Vietnamese name is written in three parts, sometimes four: the family name (họ), one or more middle names (tên đệm), and the given name (tên). In Nguyễn Văn Minh, Nguyễn is the family name and Minh is the personal name.
The given name is the one that matters day to day. Vietnamese people are addressed by it in conversation, at work and in formal settings, usually with a title or a kinship word in front.
Address people by the last part
In English, write Dear Mr. Minh or Dear Ms. Lan, not Mr. Nguyễn. Using the family name with a title sounds odd to Vietnamese ears, and it identifies nobody: a few family names cover most of the population.
If you cannot tell whether to write Mr. or Ms., the full name is always polite: Dear Nguyễn Văn Minh. Once you are on first-name terms, Hi Minh is normal.
When the name has been flipped
Many Vietnamese people who work with foreign colleagues, and most of the diaspora in the US, Australia and Europe, write their name in Western order: Minh Nguyen. The practical test is where the common family name sits. If Nguyen, Tran or Le is the last word, the name has been flipped and the given name is now first.
| As written | Family name | Given name | Order |
|---|---|---|---|
| Nguyễn Văn Minh | Nguyễn | Minh | Vietnamese |
| Minh Nguyen | Nguyen | Minh | Flipped to Western |
| Minh Van Nguyen | Nguyen | Minh | Flipped, middle name kept |
| Trần Thị Lan | Trần | Lan | Vietnamese |
Why everyone seems to be called Nguyen
A small number of family names cover most of the country. Nguyễn alone is commonly estimated at close to four in ten people, and roughly 14 family names account for about 90 percent of the population. That is exactly why the family name is not used to address someone.
The most frequent Vietnamese family names among people from Vietnam recorded in Wikidata:
| Family name | People in Wikidata | Share of the top 14 |
|---|---|---|
| Nguyễn | 807 | 42.8% |
| Trần | 225 | 11.9% |
| Lê | 167 | 8.9% |
| Phạm | 143 | 7.6% |
| Vũ | 68 | 3.6% |
| Hoàng | 67 | 3.6% |
| Bùi | 65 | 3.4% |
| Ngô | 64 | 3.4% |
| Đặng | 56 | 3.0% |
| Chen | 54 | 2.9% |
| Phan | 53 | 2.8% |
| Nguyen | 40 | 2.1% |
| Trịnh | 40 | 2.1% |
| Huỳnh | 36 | 1.9% |
Wikidata covers notable people (athletes, politicians, scientists, artists), so these counts show the ranking, not exact population shares.
Văn and Thị: the middle name as a clue
Traditionally, Văn was the most common middle name for men and Thị for women, so Nguyễn Văn Minh is likely a man and Trần Thị Lan likely a woman. Many younger Vietnamese have other middle names, so treat this as a hint about the name, not a fact about the person.
Married names
Vietnamese women keep their own family name when they marry. In traditional usage a married woman may be called by her husband's given name (Nguyễn Hồng Liên, married to Lê Anh Dũng, may be addressed as Mrs. Dũng), but in work email her own name is the safe choice.
Quick answers
Is Nguyen a first name or a last name?
Nguyen is a family name, the most common one in Vietnam. Whether it is written first or last depends on whether the person kept Vietnamese order or flipped it.
How do I address Nguyen Van Minh in an email?
Dear Mr. Minh, or Dear Nguyen Van Minh if you are unsure about the title.
What about the diacritics?
Nguyễn and Nguyen are the same name. Use the marks if the person uses them in their own signature; leaving them out is common and accepted in international email.