For an adult whose family name is Anderson, 安 Ān is my first choice for a Chinese surname. It keeps the beginning of 安德森 Āndésēn, an established Chinese transcription, and is already a genuine surname. 孙 Sūn, written 孫 in traditional characters, is a more distant option if you care most about the idea of descent behind *-son*. You gain that association by giving up the distinctive Ander- beginning and accepting that 孙 refers to grandchildren or later descendants rather than directly to a son.
The useful part of the familiar transcription
Chinese-language usage provides a straightforward starting point. A Chinese Academy of Sciences report writes Philip Warren Anderson as 菲利普·沃伦·安德森. This directly verifies the surname spelling 安德森. It does not mean that choosing 安 links you to the scientist’s work or personality. Chinese Academy of Sciences usage
The whole three-character sequence represents Anderson. If you are translating an author line, introducing yourself with your existing name or supplying a Chinese rendering alongside an English one, you may simply want 安德森. In that case, there is no need to shorten it.
Choosing 安 alone is useful for a different purpose: building a Chinese name with a one-character surname followed by a separate given name. It keeps a visible link to Anderson without treating 德森 as if it were automatically your given name.
If your family already has a Chinese spelling, start with that usage. An established personal spelling is more relevant to your name than a general recommendation in an article.
Listen to the first syllable
Dictionary.com gives the American pronunciation /ˈæn dər sən/ and the British pronunciation /ˈændəsən/. Both begin with the stressed syllable /æn/. The difference shown in the middle reflects the presence or absence of an *r* sound in those reference pronunciations. Your own accent remains the starting point. Anderson pronunciation
Ān preserves a vowel followed by *n*, so the relationship to An- is easy to hear. The Mandarin vowel is not an exact copy of English /æ/, and Ān has a level first tone. English stress does not determine that tone. A single Ān also leaves out the rest of Anderson, including the *d*, the middle syllable and the final *-son*.
Those losses are why I describe 安 as a short adaptation rather than a complete phonetic translation. It works particularly well when you want an explanation that remains simple: “I took the first character of the Chinese spelling of Anderson.”
An is a surname, not just a pleasant word
The Ministry of Education dictionary lists 安, pronounced ān, as a surname. It also records meanings connected with a stable, safe or comfortable condition. Surname use and ordinary word meaning are separate pieces of information. 安 dictionary entry
You may like the association with peace or ease, but it is an added reason to enjoy the character. It does not translate the origin of Anderson, and it does not predict what kind of person you are. You can choose 安 entirely for its sound and its place in 安德森.
The character is the same in simplified and traditional writing. To introduce it, you can say “我姓安，安全的安。” That means “My surname is Ān, the 安 in 安全,” using the word for safety to identify the character. Alternatively, “我姓安，安德森的安” makes the connection to your original surname explicit.
What Anderson’s history can and cannot add
The *Dictionary of American Family Names* describes the Scottish and northern English surname as a patronymic formed from Ander(s), a form of Andrew, plus son. It also records German and Scandinavian-related routes into the spelling Anderson. The name therefore has more than one family-history context; its spelling alone does not identify a reader’s ancestry. Anderson surname entry
The immediate relationship is to a personal name. Translating Anderson as “peaceful forest” because 安 and 森 have those ordinary meanings would confuse the Chinese transcription with the surname’s etymology. Likewise, you do not need a masculine Chinese surname just because the historical construction contains “son”. This is an inherited family name used by adults of any gender.
孙 Sūn is a possible choice if you want the new surname to suggest descendants or family continuity. Its surname status and those kinship meanings are explicitly recorded in the Chinese dictionary. The surname reading is Sūn; the same character’s other dictionary readings belong to other uses. 孫 surname and readings
There is also a loose sound link between *-son* and Sūn: both have an *s* at the beginning and an *n* at the end. The vowel changes to Mandarin *u*, and Sūn receives a level first tone. The Chinese character does not preserve Andrew, and its kinship meaning skips or broadens the generation described by English “son”.
I would choose 孙 only if you prefer that explanation to the closer opening-sound link of 安. It is a personal adaptation of a family idea, not a one-character translation of “son of Andrew”. You can introduce it with “我姓孙，子孙的孙”: “My surname is Sūn, the 孙 in 子孙,” meaning descendants.
Does the historical story suggest another Chinese family?
The surname dictionary connects Andrew’s popularity in Scotland partly with Saint Andrew. That is useful naming history, but it does not establish that a particular Anderson is Scottish, Christian or related to a saint. It also does not supply an equivalent Chinese religious surname. Historical context in the surname entry
Similarly, 孙 has its own historical bearers; the Chinese dictionary names Sun Wu as one example. His existence verifies an old surname use. It does not turn Anderson into a military surname or make his biography the reason every Anderson should choose 孙.
A Chinese historical figure could still matter because you personally admire that figure. That would be new information about your interests. From Anderson alone, the sound-led 安 and the qualified descent-led 孙 are the connections I can explain without adding a borrowed family story.
Say the complete name before choosing
Put each surname before the Chinese given name you intend to use, then say a full introduction. Both Ān and Sūn have first tone, but they begin very differently: 安 starts with a vowel; 孙 starts with *s*. Try writing the simplified and traditional forms too, since 孙 becomes 孫 while 安 stays the same.
My recommendation remains 安 Ān for its clear link to the beginning of Anderson and to 安德森. Keep 孙 Sūn as an option when family continuity matters more to you than the opening sound. Neither choice requires you to change how you use Anderson in English.
