60 Korean Surnames + How They Differ from Japanese
Updated May 13, 2026
Korean and Japanese surnames look superficially similar to outsiders — both come first in name order, both have East Asian script roots — but they work in opposite ways. Korean surnames are a tiny, ancient set: Kim, Lee and Park alone are carried by roughly 45% of South Koreans, and the entire country uses well under 300 surnames. Japanese, by contrast, has over 100,000 distinct surnames, because most weren't standardised until 1875. Below: a full list of common Korean surnames, the rules that govern them, and a side-by-side cheat sheet for distinguishing the two in fiction.
The basic rule: Korean concentrates, Japanese diffuses
Korean surnames descend from a small set of ancient clan names ('seong'), each tied to historical lineages. Most are a single syllable, written with one Hanja (Chinese character). The top three (Kim, Lee, Park) come from the founding myths of three kingdoms and cover almost half of South Korea. Japanese surnames, in contrast, were mostly invented in 1875 when commoners were forced to choose one — so they tend to be descriptive geographic compounds (Yamada = 'mountain rice field') rather than ancient lineage markers. A Korean character with the surname Kim could be any of millions; a Japanese character with the surname Yamada is more individually 'located' on the map of names.
Top 25 Korean surnames (covers ~80% of South Korea)
- Kim— 金 'gold' — Silla royal lineage. Most common Korean surname.
- Lee— 李 'plum' — also Yi or Rhee in different romanisations.
- Park— 朴 — derives from Korean 'bak'; traditionally linked to 'gourd'.
- Choi— 崔 — also Choe.
- Jeong— 鄭 — also Jung, Chung.
- Kang— 姜 — also Gang.
- Cho— 趙 — also Jo.
- Yoon— 尹 — also Yun.
- Jang— 張 — also Chang.
- Lim— 林 'forest' — also Im.
- Han— 韓 — sometimes Hahn.
- Oh— 吳 — single syllable, sometimes O or Wu.
- Seo— 徐 — also Suh, Surh.
- Shin— 申 / 辛 / 愼 — three different surnames same romanisation.
- Kwon— 權 — also Gwon.
- Hwang— 黃 'yellow'.
- Ahn— 安 — also An.
- Song— 宋.
- Yoo— 柳 / 俞 — also Yu, Ryu.
- Hong— 洪.
- Jeon— 全 / 田 — also Jun, Chun.
- Ko— 高 'tall' — also Go, Koh.
- Moon— 文 'literature'.
- Son— 孫 'grandson'.
- Yang— 梁.
Less common Korean surnames (for distinctive characters)
- Bae— 裵 / 裴.
- Baek— 白 'white' — also Paek.
- Heo— 許 — also Huh.
- Nam— 南 'south'.
- Sim— 沈 — also Shim.
- Noh— 盧 — also Roh.
- Ha— 河 — also Hah.
- Kwak— 郭.
- Sung— 成 — also Seong.
- Cha— 車 'cart'.
- Joo— 周 — also Ju, Chu.
- Woo— 禹.
- Min— 閔.
- Chae— 蔡.
- Bang— 方.
- Pyo— 表.
- Gu— 具 / 丘.
Quick cheat sheet: Korean vs Japanese at a glance
Use this to keep them straight in your writing — readers will catch even small slips, especially in genre fiction with East Asian settings.
- Length— Korean surnames almost always one syllable (Kim, Lee, Park, Choi). Japanese almost always two or three (Yamada, Tanaka, Watanabe, Hashimoto).
- Vowel feel— Korean has more closed syllables and consonant clusters (Kwon, Pak, Shin). Japanese is open-syllable: every consonant followed by a vowel (Sa-tō, Su-zu-ki, Wa-ta-na-be).
- Spelling tells— Korean uses 'oo' (Yoo, Woo), 'eo' (Seo, Jeon), 'ae' (Bae, Hae), and ends often in -n, -k, -m, -ng. Japanese romanisation almost never uses 'oo' or 'eo'; ends usually in a vowel (-a, -i, -o, -u, -e).
- Family meaning— Korean surnames feel like dynastic clan names. Japanese feel like place descriptions — paddies, rivers, mountains, gates.
- Order in fiction— Both put surname first in their native order (Kim Min-jun / Tanaka Tarō), but Korean given names are often two syllables hyphenated (Min-jun, Hae-rin), while Japanese given names usually flow as one word (Tarō, Hanako).
- If you're stuck— If the romanisation looks like 'something-something-something', it's almost certainly Japanese. If it's a punchy single syllable, almost certainly Korean.