For Richardson, I would begin with 理 Lǐ, the opening character of the documented transcription 理查森 Lǐchásēn. 理 is independently recorded as a Chinese surname with that reading. 李 Lǐ gives you the same Mandarin sound with a different character; 瑞 Ruì, from the alternative transcription 瑞查森 Ruìchásēn, changes the sound as well. These are three distinct choices, rather than different ways of writing one Chinese surname.
My first choice is 理 if you want the written connection to remain visible. Compare 李 if you prefer that character in your complete name, and 瑞 if its different sound suits you better. Retaining the full transcription is still the clearest option when the purpose is to identify Richardson rather than create a short Chinese name.
Two established openings, not one compulsory spelling
The National Academy for Educational Research lists Richardson—理查森/瑞查森 in its English surname table. That gives both 理 and 瑞 a documented starting point. The table does not say every Richardson must adopt either spelling, and a version already used in your publications or professional contacts deserves consideration before you change it. 1
Notice that both listed forms end in 森. The English ending is part of the original surname; it is not a Chinese given name waiting to be separated from its first character. Choosing 理 as your new surname leaves you free to choose a Chinese given name independently. It does not turn 查森 into a required given name.
The reference lists a compact rendering. Some people may have a longer Chinese spelling of Richardson in existing use. Start from the version that actually belongs to you, rather than silently replacing it with the form in a reference table. The discussion here explains the two verified openings, not a universal spelling rule.
理 is a surname under Lǐ
Academia Sinica's character database records both the reading lǐ and the surname sense of 理. Hàndiǎn also places its surname sense under lǐ. This is separate evidence from the transcription table: the first source tells us that 理查森 has been used for Richardson; the dictionaries tell us that 理 can stand as a Chinese surname. 2, 2.1
理 also occurs in words concerned with reason, order and managing things. You may like those associations, but they do not make Richardson mean “reason”, or promise that the bearer is rational. The sound-and-writing connection is enough to explain the choice without turning a character into a personality assessment.
A useful introduction is 我姓理，道理的理。Wǒ xìng Lǐ, dàolǐ de lǐ. This identifies the character through the familiar word 道理. You can then add that it is the first character of your chosen Richardson transcription. If someone writes 李 after hearing Lǐ, showing the character resolves the difference.
What changes if you choose 李?
李 Lǐ is independently attested as a surname under the same third-tone reading. It is not the simplified form of 理, and changing from one to the other is a choice of surname, not a script conversion. Both characters keep their form in simplified and traditional Chinese. 3
For the spoken name, 理 and 李 are identical in standard Mandarin. 李 therefore does not recover any part of Richardson that 理 loses. Its practical advantage can be your preference for the character or the way you want to explain it. 我姓李，木子李。 identifies 李 by its visible components, without claiming that this is a complete account of its historical formation.
李 is associated with the plum tree and fruit. That association belongs to the Chinese word; it is not Richardson's etymology. Nor does choosing 李 establish a genealogical connection to a Chinese 李 family. Keep the story modest: you selected a documented Chinese surname with the same Mandarin sound as the opening you were considering.
瑞 offers a genuinely different sound
The second opening, 瑞 Ruì, is also recorded as a surname under ruì in Hàndiǎn. Its use in 瑞查森 is therefore supported by an independent surname-reading entry. 4
Ruì has Mandarin's falling fourth tone and a rounded glide in its syllable. Its initial r is a Mandarin sound, not an instruction to copy an English r. Compared with Lǐ, you change the consonant, vowel sequence and tone. 瑞 keeps the written opening of 瑞查森, while 理 keeps the opening of 理查森. Neither is automatically a more faithful rendition of your own accent.
The character has auspicious associations, but a pleasing association does not improve the phonetic match. Choose it because you like the whole Chinese name and its honest connection with a documented transcription. You can identify it with 祥瑞的瑞, “the 瑞 in 祥瑞”.
How much of Richardson can one syllable keep?
Dictionary.com gives the American reference pronunciation /ˈrɪtʃərdsən/ and also lists a British form. The American entry retains an r in the middle syllable; neither entry is a rule for every family or regional accent. Start with the way you actually say your surname. A single Lǐ or Ruì cannot retain that medial r together with the remaining English consonants. 5
Lǐ substitutes a Mandarin l and i-like vowel for the opening English sound. Ruì takes a different route with a Mandarin r and a more complex vowel sequence. Both drop the English ch sound and the remainder of Richardson, including the final n. A Mandarin tone is added; it does not reproduce English first-syllable stress.
The full Lǐ-chá-sēn or Ruì-chá-sēn preserves more syllabic structure, but it also changes vowels and consonants. Selecting just its first character is a further shortening. If recognition matters in a bilingual workplace, keep Richardson beside the Chinese name rather than expecting one Chinese syllable to identify the entire surname.
The meaning does not require another surname
The surname dictionary describes the English route as Richard plus the patronymic ending -son; it also records Scandinavian-related histories. That explains a naming pattern, not the actual parentage of every present-day Richardson. 6
There is no need to translate -son with a Chinese kinship word or to search for a famous Chinese ancestor called Richard's equivalent. A patronymic ending is not an occupation or a virtue. A cultural preference can matter to you personally, but no specific ancient Chinese relationship established here adds a better candidate than the documented sound-led choices.
Try 理, 李 and 瑞 in the complete name you intend to use. Say the surname first, practice explaining the character and check the whole name for unintended words. For a straightforward starting point, 理 offers the shortest explanation: you kept the opening of 理查森.
What the United States figure means
The U.S. Census Bureau's standard 2020 surname table lists RICHARDSON at rank 83 with a published count of 249,840. The data were released on April 14, 2026, but refer to the 2020 Census. This is a surname-frequency count after disclosure-avoidance processing, not a count of current residents in 2026. The standard table is kept distinct from research variants and from the 2010 data. 7, 7.1
This U.S. context does not alter the evidence for 理, 李 or 瑞. It supplies a different statistical setting for the same surname. An aggregate record does not determine an individual's ancestry or identity.
A note on this article's evidence
The two transcriptions come from the NAER English surname table, printed page 14. I checked surname senses and readings separately in 理, 李 and 瑞. The sound comparison uses the Dictionary.com American entry, and the patronymic explanation follows the surname dictionary. The statistical unit and release date follow the 2020 Census names page. Preferring 理 is an editorial decision about written continuity; it does not turn -son into a Chinese family relationship or establish common ancestry.
The private British Surnames list separately places Richardson at website position 63 without a count. It covers Great Britain, meaning England, Scotland and Wales, excluding Northern Ireland. Its reference year, underlying counting unit and method remain unverified. This ordinal cannot be combined with the U.S. count or presented as an official current UK-wide population rank.
