For López, I would first compare 洛 Luò, 骆 Luò and 罗 Luó for an everyday Chinese name. 洛 keeps the opening of 洛佩斯 Luò pèi sī; 骆 changes the character without changing the Mandarin sound; 罗 changes the tone. The older Lope–wolf connection is worth understanding, but 狼 Láng has a much more conspicuous animal image and is discussed separately below.
The useful question is what you want your new Chinese name to retain. A short surname can preserve a recognizable beginning or an etymological association. It cannot preserve the entire sound and history at once. If representing López in full matters most, keeping 洛佩斯 remains a valid choice.
Your own pronunciation comes first
Reading this in English, or living in the United States, does not tell us which language or pronunciation you use for your surname. You might say López differently in different settings. Use your own preferred pronunciation as the starting point; do not change it simply to fit the examples below.
For a Spanish-language reference, López is stressed on Ló-. Broad forms are /ˈlopes/ with seseo and /ˈlopeθ/ where s and z are distinguished. This difference concerns the ending, not the initial Lo-. The RAE describes these regional uses of z; the two transcriptions here are editorial applications of those rules, not recordings of every family. RAE entry for z
The Chinese spelling 洛佩斯 appears in a Xinhua report about a Spanish person. It establishes an existing transliteration, not a rule that every López must follow. Mandarin Luò introduces the vowel sequence written uo and a falling fourth tone. Spanish lo has neither that identical vowel sequence nor a Mandarin lexical tone. If your own pronunciation uses a different vowel again, compare that directly rather than assuming this match becomes exact in English. Published transcription
Taking 洛 removes 佩斯, which represents the later portion of the original surname. A one-character choice also no longer tells a listener that the source name ends in -pez. This is a purposeful shortening into a Chinese surname, not a complete translation.
What each Luo choice changes
洛 Luò keeps the same character and tone as the beginning of 洛佩斯. The Ministry of Education dictionary explicitly lists surname use under luò. The character also points to the Luo rivers and Luoyang. You can use that geographical association to identify its writing without claiming your family comes from those places. 洛 entry
骆 Luò, traditional 駱, sounds exactly like 洛 in standard Mandarin. It changes the written character, not the syllable or tone. The dictionary confirms it as a surname and records an older horse-related meaning. The horse component is a practical way to explain which Luò you mean. It is not an improvement in sound over 洛, and it does not make López a horse-related surname. 駱 entry
罗 Luó, traditional 羅, changes both writing and tone. It takes the rising second tone where 洛 and 骆 take the falling fourth tone. It is a documented surname, with lexical meanings including a net and fine silk. You might prefer how it works in your complete name, but those meanings do not explain López. 羅 entry
None should be excluded just because it looks unfamiliar to you. They are real surnames with documented readings. The decision is concrete: keep the initial written form with 洛; choose a different character at the same sound with 骆; or change the tone as well with 罗. There is no sound-based need to skip the opening and search the final syllable when these opening options already work.
The wolf connection takes two steps
For the Spanish surname, the Dictionary of American Family Names entry reproduced by FamilySearch derives López from the medieval personal name Lope. A study by Dolores Carmen Morales Muñiz links Lope to Latin lupus, meaning wolf. So the chain is López → Lope → wolf. A compact explanation such as “López means wolf” hides the surname's patronymic formation and makes the connection sound more direct than it is. Surname entry, academic study, printed page 57
狼 Láng can carry that animal association. It is not a surname invented for this translation: the Ministry of Education's dictionary records láng and a surname sense citing historical sources. That evidence establishes historical surname use; it does not establish a modern population count, widespread familiarity or acceptance of every proposed full name. 狼 entry
You gain a direct Chinese wolf image but lose the sound of López, including its opening vowel, and the link expressed by its surname formation. The character's animal meaning is immediately visible to a Chinese reader, while the reason for connecting it to Lope needs explanation. That prominence can be attractive if you actively want it. It can also be too strong if you mainly want an understated everyday link to your existing name.
Consider associations as well as dictionary eligibility. The dictionary also records an unfavorable sense involving rapacity. That does not describe people who have this surname, and it is not a reason to declare the surname unusable. It is a reason to test your complete name and explanation in the community where you will use them.
郎 Láng is a different surname, although it sounds the same in Mandarin. Substituting 郎 for 狼 removes the written wolf character; it does not preserve the animal meaning by magic. If you prefer 郎 for its own reasons, explain that as a new choice rather than calling it the Chinese word for wolf. 郎 entry
Choose a name you can introduce comfortably
Try 我姓洛，洛阳的洛: “My surname is Luò, the 洛 in Luoyang.” This explains the character without giving a long etymology lesson. With 骆, show or describe the horse component; with 罗, keep the rising tone clear. Because 洛 and 骆 sound identical, a listener may need to see the character to know which one you mean.
Place your two finalists before the same proposed Chinese given name. Read each aloud, write it as a signature, and have a Chinese speaker read the whole combination without prompting. Check whether the surname boundary is clear, whether the combination brings an unintended association, and whether you like explaining it. Mandarin comparisons do not automatically predict Cantonese or other Chinese-language readings.
My first recommendation is 洛 Luò for continuity with 洛佩斯. Compare 骆 Luò for another character at the same sound and 罗 Luó for a rising tone. I would normally leave 狼 Láng outside the everyday shortlist because its conspicuous animal image and less direct naming explanation require a strong personal reason. Keep 洛佩斯 whenever recognizing the complete original surname matters most.
About the U.S. source number
The recorded U.S. source lists LOPEZ at rank 12, with a published surname frequency of 878,958. This is 2020 Census data after disclosure-avoidance processing, released April 14, 2026 and captured October 4, 2026. It is not a current 2026 population count, and the uppercase source key does not tell us an individual's preferred spelling, pronunciation or identity. U.S. Census source
Research and methodology notes
Sources used in this comparison: RAE entry for z; 洛 entry; 駱 entry; 羅 entry; 狼 entry; 郎 entry; Surname entry. Read each source within the limits of the passage where it is cited. A documented transcription, surname use and surname pronunciation are separate questions.
Any figures retain the source coverage and dates stated in the article; this comparison does not establish current worldwide frequency.
