For Thompson, start with 汤 Tāng and 唐 Táng. 汤 keeps the first character and level tone of the established transcription 汤普森; 唐 keeps the same Mandarin consonant and vowel pattern but changes to a rising tone. If the older name meaning matters more to you, 双 Shuāng offers a more distant link through Thomas and the idea of a pair. That last choice drops the sound and the “son of” part of Thompson, so it needs a different reason.
These are options for an adult choosing a Chinese surname for personal use. Keeping the whole transcription is also sensible when recognising Thompson matters more than having a one-character Chinese surname.
Begin with the Thompson you actually say
Cambridge gives British /ˈtɒmp.sən/ and American /ˈtɑːmp.sən/. In both, the opening is /t/, not the dental sound in *thin*. The first syllable is stressed; the /m/, /p/ and final syllable are all part of the name that a single Chinese character will have to leave behind.
汤普森, traditional 湯普森, is read Tāngpǔsēn in Mandarin. The online transcription entry identifies it as the English surname Thompson and cites the Xinhua foreign-name dictionary. That is the online entry consulted here, rather than a claim to have inspected the printed volume. It supplies a recognisable Chinese starting point without prescribing how every individual must write their name.
The p in Thompson gives 普 a useful job in the full transcription. When you shorten 汤普森 to 汤, you remove that part along with 森. A shorter Chinese surname can work well for introductions, but it cannot preserve all the information in the original.
汤 or 唐 comes down to continuity and tone
汤 Tāng, written 湯 traditionally, is an established surname under the dictionary's tāng reading. Its everyday meanings include hot water and soup. The same entry has another reading, shāng, used in 湯湯; that is not the surname reading proposed here. Ministry of Education dictionary: 湯.
Choosing 汤 makes the link easy to explain: “I took the beginning of 汤普森.” It preserves both the character and tone of that transcription. Compared directly with English Thompson, however, Tāng changes the vowel and replaces the lip-closed nasal /m/ with /ŋ/ while dropping /p/. The /ŋ/ is the sound at the end of English *sing*. It also introduces a Mandarin tone. The soup meaning is something you can recognise in the character, not the origin of Thompson or a claim about your family's occupation.
唐 Táng is also explicitly recorded as a surname. The character is used in Chinese dynastic names, including Tang. Ministry of Education dictionary: 唐. It substitutes another character for 汤 and changes the first tone to the second. In tone-marked pinyin, Tāng and Táng are visibly different; when both are written simply “Tang,” that difference disappears.
If retaining the written link to Thompson is your priority, try 汤 first. If you prefer 唐 in your complete name, the sound connection remains understandable, but it is now a deliberate substitution. Neither choice makes your Chinese family history the history of a dynasty. You do not need a famous person with the same Chinese surname to justify a sound-based choice.
What does the “son” in Thompson actually preserve?
The Hanks surname-dictionary extract on FamilySearch explains Thompson as a patronymic formed from a Middle English form of Tom plus *-son*. It also records Americanised uses of related northern European surnames. This is why a surname explanation should not be presented as one shared family tree for everyone called Thompson.
Following Tom back to Thomas reaches an Aramaic byname meaning “twin,” as explained in the Thomas dictionary extract. There are therefore two steps: Thompson points to a person called Tom, and that personal name has an older meaning. Thompson is not a description saying that its present-day bearer is a twin.
双 Shuāng, traditional 雙, is a real surname under the first-tone reading. Its meanings concern pairs and doubling. The dictionary also has a fourth-tone reading in another expression; the surname belongs under shuāng, regardless of which reading appears in the webpage title. Ministry of Education dictionary: 雙.
双 can suit someone who deliberately wants to retain that remote “two” association. It does not literally translate “son of Tom,” and a pair is broader than a twin. I would keep it behind 汤 and 唐 unless this etymological detail genuinely matters to you. The explanation is an editorial association between names, not evidence that the two surnames share an origin.
No Chinese historical figure supplies a necessary third recommendation here. Choosing any famous pair of brothers would not establish a connection with Thompson, and a generic story about descent would add little to the patronymic explanation. A precise sound choice is more useful than an unrelated biography.
Test the surname with the name you will use
Keep your proposed Chinese given name unchanged and read it once after 汤 Tāng, then after 唐 Táng. You can hear the tone change without changing everything else. Ask a Mandarin speaker to read the written full name without coaching and check what words or associations it suggests. This is a check to carry out, not a test already completed for these choices.
For a straightforward link, 汤 is the strongest starting point because it retains the beginning of 汤普森 exactly. 唐 gives you another real surname with the same segmental sounds and a different tone. 双 is for a conscious preference for the older “pair” association. If you want the /m/, /p/ and ending of Thompson to remain identifiable, keep 汤普森 rather than asking one character to do the work of three.
