If your surname is Green, 格, Gé, gives you a direct connection to the beginning of the established Chinese spelling 格林, Gélín. 青, Qīng, is the more deliberate colour choice: it can mean green, though its range also includes blue and black. I would start with Gé if retaining the written link matters most, and compare Qīng if the colour is the part you want your new surname to carry.
These are choices for an adult adopting a Chinese surname to use with a Chinese given name. Keeping Green, or using the complete spelling 格林, remains perfectly possible. A one-character surname is an option, not a requirement.
Start with the actual Chinese spelling
Green is normally one English syllable, /ɡriːn/. You can check that sound in Collins. Mandarin does not reproduce that initial /ɡr/ sequence in a single syllable. The spelling 格林 spreads the approximation across two syllables, *Gé-lín*.
This spelling is documented in an institutional source, rather than constructed for this guide. Tsinghua University's announcement identifies Timothy Charles Green as 蒂莫西·格林. The modern professor supplies evidence for a spelling only; his work or personal qualities are not part of the reason to choose your surname.
Before shortening a transliteration, its first character deserves a separate check. 格 is independently recorded as a Chinese surname under the reading gé in the Ministry of Education's character dictionary. Its presence in 格林 is therefore not the only evidence for using it as a surname.
Choosing 格 Gé keeps that first character and its rising second tone. It loses the *lín* syllable, including the final n that helped represent the ending of Green. It is a concise written connection, but it is not the whole English name compressed into one Mandarin sound.
Gé and Gě change the character and tone
葛 Gě is another genuine surname, but it is worth resisting an unnecessary substitution. The concise dictionary places its surname use under the third-tone reading *gě*. If you replace 格 with 葛, both the character and the tone change; the ordinary plant reading *gé* does not settle the surname reading. Since 格 itself is a surname, there is no need to discard it merely to find a valid one. Compare 葛 only if you actually prefer that character and the third tone.
Qing keeps a colour with wider boundaries
The *Dictionary of American Family Names*, available through FamilySearch, gives several English routes to Green, including green clothing, a village green and a nickname associated with youth. This makes a colour-based choice reasonable, but the dictionary cannot identify which history belongs to your family.
青 Qīng is a real surname. The third edition of Shogakukan's Chinese–Japanese dictionary, reproduced by Kotobank, explicitly lists surname use under *qīng*. Its first tone is high and level. Do not replace the character with 清 merely because it is another familiar *qīng*: that would be a separate name requiring its own reason and evidence.
The colour link needs one qualification. The Ministry of Education's 青 entry gives green, blue and black uses. 青 can evoke green vegetation, but it is not a colour swatch that always means the same thing as modern English “green”.
For a name, that wider range can be a feature rather than a problem. Choose it if you like the character and are comfortable explaining “I chose a surname associated with green.” It will not preserve the beginning of Green: Mandarin q is an aspirated sound, and its final ng differs from English n. This is primarily a meaning-led choice.
A robe in a poem illustrates the cultural difference
A specific literary example helps with the colour question. In Bai Juyi's *Song of the Pipa*, the poet describes his robe becoming wet with tears after hearing a musician's story. The expression 青衫 is part of that scene; the Ministry of Education's explanation also connects it with modest official dress.
It would flatten that scene to turn it into a cheerful story about someone “wearing green”. It belongs to a poem about recognition and sorrow, with its own social setting. You may enjoy that additional literary association with 青, but it does not make the poet's surname, 白 Bái, a substitute for Green. The useful connection stays with the colour word and the clothing, not a borrowed family lineage.
Try the choice in an introduction
Say 我姓格, Wǒ xìng Gé, “My surname is Gé”, then try 我姓青, Wǒ xìng Qīng. These introductions express different choices. If you prefer 葛, use 我姓葛, Wǒ xìng Gě, with the third tone.
Next, put each surname before the Chinese given name you intend to use. All three are written the same way in the usual simplified and traditional forms. 格 has a rising tone, 葛 a third tone and 青 a level tone. Ask a Mandarin speaker to repeat the whole name and write down the characters they understood. A pleasing isolated character does not guarantee a good full name, and these suggestions have not been tested with your particular given name.
My practical order would be 格 first for the direct written link, 葛 if you prefer a different character and tone, and 青 for the colour. You can select one of those priorities without inventing an ancestral story. If none of the shortened forms feels like you, keep 格林.
*Statistical context: the frozen British Surnames list places Green at source position 18 for Great Britain, meaning England, Scotland and Wales. Its reference year and counting method are unverified. Separately, the U.S. Census Bureau's 2020 surname file places GREEN at rank 42 with a disclosure-avoidance-processed frequency of 415,664. These are different measures and are not a combined population total. British list; U.S. Census source.*
