Thai Names
This essay is the same on the pages of all 1 country that use the tradition, and what differs between them, their registers and their rankings, is on those pages.
Thai is spoken in Thailand and written in the Thai script. The source treats personal naming as a deeply belief-laden act: in Thai society first names "are not only used to call or to identify the owners, but ... help them have good lives," so they are carefully selected for auspiciousness. The belief is long-standing, the source cites a line in the classic Khunchang Khunphaen (Ratanakosin period): "Grandparents are pleased to name their granddaughter with auspiciousness." Name meanings draw on standard Thai, Thai dialect, and Pali/Sanskrit vocabulary. (The source focuses on first/given names and the astrology of naming, not on family-name structure.)
ดี
- /di:/
- IPA — /di:/
- one item "to be good"
- Lexical parts — one item "to be good"
- Goodness and Prosperity
- Category / role — Goodness and Prosperity
A worked example from the naming-practices survey.
Structure & order
A Thai personal name is given-first: people are called and identified by their first (given) name, which is the carefully selected, auspicious element. (The article studies "first names" throughout and treats the first name as the primary identifier.)
[GIVEN] (+ family name): given name leads and carries the auspicious weight (given-first ordering: general knowledge; the source does not analyse the family-name component).
A given name may be a single lexical item (e.g. ดี /di:/ "to be good") or built from two or more lexical items combined (e.g. ทิติมาพร /thi?ti?ma:pho:n/ "blessing of stability"; วรวิทย์ /worra?wit/ "the best knowledge").
Given names
Selecting an auspicious name has two elements:
- Auspicious letters: choosing the consonants/vowels permitted for the person, following the traditional naming textbook Tamrataksa, and avoiding inauspicious letters entirely. A single inauspicious letter makes the whole name inauspicious.
- Favorable meaning: choosing words whose meaning reflects the social values of the time.
Family names & patronymics
The source does not describe Thai family-name formation, inheritance, gender suffixes, or particles. (Not covered by the assigned source.)
How to address someone
The source does not discuss salutation or honorifics. (Not covered by the assigned source.); Thais are conventionally addressed by their given name, commonly preceded by the polite title Khun คุณ. (general knowledge)
Pitfalls for software
- Given name is the auspicious, identifying element: the first name, not the surname, carries the cultural weight and is what people are called by.
- Birth weekday determines forbidden letters. The same letter can be lucky for one person and Kalakini (forbidden) for another, depending on the day of the week they were born, so a name's auspiciousness is person-specific, not absolute. Name-parsing software cannot judge a Thai name's "validity" without the bearer's birthday.
- Names are not stable identifiers. Frequent voluntary name changes in pursuit of better fortune mean a single person may have several legal first names over a lifetime; old census records and new ones may not match.
- Compounded Pali/Sanskrit coinages (modern names) are multi-morpheme and abstract; they may not appear in ordinary Thai dictionaries.
- Meaning matters per lexical item: names are coined word-by-word, and a name with even one bad-meaning or one Kalakini-letter component is considered inauspicious overall.
All worked examples
| Name (Thai) | IPA | Lexical parts | Category / role |
|---|---|---|---|
| ดี | /di:/ | one item "to be good" | Goodness and Prosperity |
| สมบัติ | /sombat/ | "treasure" | Wealth |
| ทิติมาพร | /thi?ti?ma:pho:n/ | thi?ti? + ma:pho:n "blessing of stability" | Goodness and Prosperity (a renamed/new-generation name) |
| วรวิทย์ | /worra?wit/ | worra? + wit "the best knowledge" | Knowledge and Ability |
| สุวรรณา | /su?wannan/ | — | inauspicious for a Friday-born person (contains Kalakini letter "s") |
Auspicious letters (Tamrataksa / Taksa)
Tamrataksa (also called Khamphiitaksaphayakorn and similar names) is an astrological textbook, said to derive from Pali/Sanskrit or Mon origins. It rests on belief in "Atthakhroh", the eight heavenly bodies (sun, moon, Mars, Mercury, Uranus, Jupiter, Pluto, Venus), each assigned a compass position and a day of the week (Pluto having no day but Wednesday night). Each day is allotted a group of letters. To classify letters as lucky or unlucky one applies "Taksa", counting clockwise from one's birthday through eight meaning-groups:
| Group | Domain |
|---|---|
| Parivara | surrounding people |
| Ayu | health and long life |
| Teja | power, dignity, fame |
| Sri | goodness, attraction, wealth |
| Mula | base, social status, treasure |
| Utsaha | diligence, tolerance |
| Montri | great authority, supporters |
| Kalakini | evil, misfortune, obstacles, decline, worries, sorrow — inauspicious; its letters must NOT be used |
So which letters are forbidden depends on the day of the week the person was born. A name born on Friday containing "s" (which falls in the Kalakini slot for Friday) is inauspicious, e.g. สุวรรณา /su?wannan/.
Favorable meanings
Meanings are grouped into 12 categories: (1) Goodness and Prosperity, (2) Wealth, (3) Nature, (4) Humans and Family, (5) Dignity/Fame/Power, (6) Actions and Qualities, (7) Knowledge and Ability, (8) Happiness and Love, (9) Religion and Beliefs, (10) Suitability, (11) Eternity, (12) Order and Numbers. Names must use words of good meaning; no name should contain a word of bad meaning.
The preferred categories shift with social values:
- Old generation (named before 1921): most names fell in "Actions and Qualities": concrete, visualised traits, often describing the baby or the situation at birth, e.g. เล็ก /lék/ "to be small" (a small baby), ขุด /khut/ "to dig" (a parent digging soil at the birth). These reflect simplicity, acceptance of one's status, and the actual state of the owner.
- Young generation (named 1981–2000): most names fell in "Knowledge and Ability," then Goodness/Prosperity, Humans/Family, Wealth, Dignity/Fame/Power, abstract worldly aspirations, e.g. วรวิทย์ /worra?wit/ "the best knowledge," ธนะวัฒน์ /tha?na?wat/ "financial progress." Modern names show a marked preference for Pali and Sanskrit lexical items over native Thai words.
The study also found the young generation more strictly avoids unlucky letters (53.53% letter-avoidance in young vs. lower in old generation; 81.22% of those who changed their names avoided inauspicious letters).
Name changing
A distinctive Thai practice: people change their names, often more than once in life, far more than in the past. The belief (P. Suwan 1995) is that "people who have an unpleasant, unsuccessful, or unhappy life tend to blame it on an inauspicious first name," and that replacing an inauspicious name with an auspicious one will improve life. Informants who changed names believed the new auspicious name would bring "happiness, success, and goodness." The source documents many old→new renamings:
| Previous name | Renamed to | New meaning |
|---|---|---|
| เกรียงศักดิ์ /kriansak/ (famous power) | ปฏิภาณ /pa?tipha:n/ | (wit) |
| สุพรรณี /su?phanni:/ (beautiful skin) | ทิติมาพร /thi?ti?ma:pho:n/ | (blessing of stability) |
| — /...kit/ (great ...) | จิรโรจน์ /ciraro:t/ | (long-lasting progress) |
Where these names are used
The commonest given names and surnames of each, from its official register where one exists.
Cite this page: Mondonomo, “Thai Names”, https://mondonomo.ai/names/tradition/thai.