45+ Korean Last Names With Meanings & Origins
Korean last names are few in number but rich in history. While the United States has more than six million surnames in circulation, South Korea’s 2000 census counted only 286 family names — and just three of them, Kim, Lee, and Park, belong to nearly half the population. Each Korean surname carries a hanja meaning and, often, a bon-gwan: the clan’s ancestral home, which distinguishes, say, a Kimhae Kim from a Gyeongju Kim. Whether you’re tracing Korean heritage, naming a character, or pairing a surname with a given name from our Korean girl names guide, this guide to 45 Korean last names covers the common, the compound, and the rare — with honest notes where a meaning is uncertain.
A note on honesty: Korean surname meanings depend on hanja, and some surnames come from place or state names that have no meaningful translation. Where the meaning is uncertain or only a historical place name, we’ve marked it “Uncertain” rather than inventing one.
Most Common Korean Last Names
These surnames dominate Korean family registers. Kim alone accounts for roughly one in five Koreans, and together with Lee and Park they cover nearly half the population — a level of concentration found almost nowhere else. Compare this density with common last names around the world to see how unusual it is.
| Last Name | Meaning (Hanja) | Notes |
|---|---|---|
| Kim (Gim) | Gold, metal (金) | ~21% of Koreans; the most common surname |
| Lee (Yi) | Plum tree (李) | ~15%; spelled Yi in Revised Romanization |
| Park (Bak) | Gourd tree, magnolia (朴) | ~8%; spelled Bak in Revised Romanization |
| Choi (Choe) | High, towering (崔) | One of the “big five” surnames |
| Jeong (Jung) | Uncertain (鄭, place-name origin) | Huge Gimhae clan; often spelled Jung |
| Kang (Gang) | Ginger, a plant name (姜) | Ancient surname with many clans |
| Cho (Jo) | To run, to go (趙) | Often spelled Jo in modern romanization |
| Yoon (Yun) | To govern (尹) | One of the oldest surnames in Korea |
| Jang | To spread, to stretch (張) | Several large regional clans |
| Shin (Sin) | To extend (申) | Also an old aristocratic surname |
| Han | Uncertain (韓, ancient state name) | Name of Korea’s ancient confederacy |
| Oh (O) | Uncertain (吳, ancient state name) | Common in the Jeolla region |
| Seo | Slowly, gently (徐) | Daegu Seo is the largest clan branch |
| Kwon (Gwon) | Authority, power (權) | Andong Kwon is a famous clan |
| Hwang | Yellow (黃) | Changwon Hwang is the largest branch |
| Ahn (An) | Peace, calm (安) | Sinan Ahn is a major clan |
| Song | Uncertain (宋, dynasty/state name) | Eunjin Song is a well-known clan |
| Hong | Vast, great (洪) | Namyang Hong is the largest branch |
More Common Korean Surnames
Beyond the top ranks, these surnames each belong to hundreds of thousands of Koreans. You’ll recognize several from K-pop, K-dramas, and Korean sports — and if you want to see how Korean family names compare with neighboring traditions, browse our Japanese last names and Chinese names guides.
| Last Name | Meaning (Hanja) | Notes |
|---|---|---|
| Jeon (Jun) | Whole, complete (全) | Large clan based in Jeongseon |
| Moon (Mun) | Writing, culture (文) | Nampyeong Moon is the largest branch |
| Son (Sohn) | Grandchild, descendant (孫) | Famous in football through Son Heung-min |
| Bae | To drape, to wear (裴) | Seongju Bae is a major clan |
| Noh (Ro) | Uncertain (盧) | Gwangju Noh is the largest branch |
| Im (Lim) | Trust, duty (任) | Also written with 林 (forest) |
| Gu | Tool, to prepare (具) | Neungseong Gu is a famous clan |
| Heo | To permit (許) | Gimhae Heo is the largest branch |
| Ryu (Yu) | Willow (柳) | Many clans; Musong Ryu is prominent |
| Baek | White (白) | Suwon Baek is the largest branch |
| Go (Ko) | High, tall (高) | Jeju Go is an ancient clan |
| Nam | South (南) | Uiryeong Nam is the largest branch |
| Ma | Horse (馬) | Small but ancient surname |
| Chae | Uncertain (蔡, state name) | Incheon Chae is a major clan |
Compound Korean Surnames
Most Korean surnames are a single syllable, but a handful use two — a legacy of ancient clan names. These compound surnames are genuinely rare today, and people who carry them are often asked about their bon-gwan. Pair one with a given name from our boy names collection for a striking full name.
| Last Name | Meaning (Hanja) | Notes |
|---|---|---|
| Namgung | South palace (南宮) | The most common compound surname |
| Seonwoo | Uncertain (鮮于, ancient clan) | Taean is the main bon-gwan |
| Hwangbo | Uncertain (皇甫) | Ancient surname of Goguryeo origin |
| Dokgo | Uncertain (獨孤) | Once rare, now slightly more common |
| Sagong | Uncertain (司空, old official title) | Very few households |
| Jegal | Uncertain (諸葛) | Famous through strategist Zhuge Liang’s line |
| Eulji | Uncertain (乙支) | Carried by general Eulji Mundeok |
Rare Korean Last Names
With only 286 surnames counted in the 2000 census, Korea has no truly “new” surnames — but the tail of the distribution is long. Some surnames belong to just a handful of families, and a few have meanings dramatic enough to make their bearers famous. Explore more unusual picks across cultures in our last names collection.
| Last Name | Meaning (Hanja) | Notes |
|---|---|---|
| Tok (Dok) | Poison (毒) | Famously rare; only a few families |
| Gok | Uncertain (曲) | Among the rarest in census counts |
| Pyeong | Uncertain (平) | Extremely few bearers |
| Muk | Uncertain (睦) | Rare, with a small clan base |
| Eo | Uncertain (魚) | Possibly “fish”; very rare |
| Jwa | Seat (座) | One of the smallest surnames on record |
The Bon-Gwan Clan System
A Korean surname alone doesn’t tell the whole story. The bon-gwan (본관) is the clan’s ancestral hometown — so “Gimhae Kim” and “Gyeongju Kim” are different clans that happen to share a surname, each tracing descent from a distinct founding ancestor. The 2000 census identified more than 4,000 bon-gwan, meaning the real unit of Korean family identity is surname + clan, not surname alone.
- Famous clan examples. The Jeonju Yi clan descends from the royal house of the Joseon Dynasty; the Gyeongju Kim clan traces back to the kings of Silla; the Miryang Park clan claims descent from King Hyeokgeose, Silla’s founder.
- Marriage rules changed in 2005. For centuries, people sharing both surname and bon-gwan were forbidden to marry. In 2005 South Korea’s Constitutional Court struck down the ban on marrying someone with the same surname, though same-clan marriages remain culturally rare.
- Clan registries (jokbo). Families keep detailed genealogical books called jokbo recording generations of male-line descent, births, and marriages — some stretching back centuries.
- Why it matters for names. When a Korean person is asked their bon-gwan, they’re being asked where their family line began. Two people named Kim can be complete strangers or distant cousins, and the bon-gwan tells which.
Korean Naming Customs
Understanding how surnames fit into Korean naming helps you use them correctly — whether you’re researching family history or choosing a name. Learn more about how these pair with given names in our name collections.
- Family name comes first. Kim Min-jun is written and spoken surname-first; in Western contexts it may flip to Min-jun Kim, but the Korean order is family name first.
- Women keep their birth surnames. Korean women do not take their husband’s surname at marriage — a child is registered under the father’s surname in most cases, so a family’s surnames can differ across generations of women.
- Given names are hanja-chosen. Each syllable of the given name is written with a hanja character carrying a meaning, so full names are miniature poems of family hope. See how meaning works in practice in our Korean girl names guide.
- Dollimja generational names. Siblings and cousins of one generation often share a syllable (Min-jun, Min-seo), a tradition called dollimja that visibly marks a generation.
- Romanization varies. Lee/I/Rhee, Park/Bak, Kim/Gim, Choi/Choe — the same surname appears in different spellings depending on the romanization system used. Don’t assume two spellings are different families.
- Honoring elders. Children traditionally avoid names that repeat or sound like an elder relative’s given name — a sign of respect woven into naming itself.
Frequently Asked Questions
What are the three most common Korean last names?
Kim (~21%), Lee (~15%), and Park (~8%) — together belonging to nearly half of all Koreans. Choi and Jeong round out the top five.
What does Kim mean in Korean?
Kim (김) is written with the hanja 金, meaning “gold” or “metal.” It is the most common surname in Korea, carried by roughly one in five Koreans.
What is a bon-gwan?
A bon-gwan (본관) is a clan’s ancestral hometown. Koreans identify their family line by surname plus bon-gwan — for example, Gimhae Kim versus Gyeongju Kim are distinct clans sharing one surname.
Do Korean women change their last name when they marry?
No. Korean women keep their birth surnames after marriage, and children are typically registered under the father’s surname.
Are there Korean surnames with two syllables?
Yes — compound surnames like Namgung, Seonwoo, Hwangbo, and Dokgo use two syllables. They are rare and trace back to ancient clan names.
How many Korean surnames are there?
South Korea’s 2000 census counted 286 surnames and over 4,000 bon-gwan clan branches. The surname pool is one of the smallest of any major country.
Conclusion
Korean last names prove that small numbers can hold enormous history. Forty-five surnames — from the one-in-five ubiquity of Kim to the handful of families named Tok — carry hanja meanings, clan homelands, and centuries of genealogy in a single syllable or two. Whether you’re honoring Korean heritage, writing a character, or simply fascinated by how names work, start with the bon-gwan: it turns a surname into a story. And if you’re building a full name, our Korean girl names and boy names guides supply the given-name half of the equation. For background reading, the Korean name article on Wikipedia covers conventions in depth, Behind the Name lists hanja readings, and the U.S. Social Security baby names data shows how Korean names rank in America.
