This is a list of Korean family names ranked by year 2000 population.
| Hangul | Hanja | Revised | McCune-Reischauer | Popular spellings | 2000 South Korean population * |
|---|---|---|---|---|---|
| 김 | 金 | Gim | Kim | Kim, Kym | 18,925,949 |
| 이 (S) 리 (N) 5 |
李, 伊, 異 | I (S) Ri (N) 5 |
Yi (S) Ri (N) 5 |
Lee, Yi, Rhee, Ree, Rey, Rhie | 6,796,227 |
| 박 | 朴 | Bak | Pak | Park, Pak, Bark, Pack | 3,895,121 |
| 정 | 丁, 程, 鄭 | Jeong | Chŏng | Chung, Jung, Joung, Chong, Cheong, Choung | 2,230,611 |
| 최 | 崔 | Choe | Ch'oe | Choi, Che, Choy, Chey | 2,169,704 |
| 조 | 趙, 曺 | Jo | Cho | Cho, Joe, Joh, Jou | 1,347,730 |
| 강 | 姜, 剛, 康, 强, 彊 | Gang | Kang | Kang, Kahng, Kwang, Khang | 1,169,805 |
| 유 (S) 류 (N) 4 |
柳, 劉, 兪, 庾 | Yu (S) Ryu (N) 4 |
Yu (S) Ryu (N) 4 |
Yoo, You, Ryu | 1,040,984 |
| 윤 | 尹 | Yun | Yun | Yoon, Youn, Yune, Yeun | 948,600 |
| 장 | 莊, 章, 張, 蔣 | Jang | Chang | Chang, Jahng, Jhang, Gang, Zhang | 943,257 |
| 신 | 申, 辛, 愼 | Sin | Sin | Shin, Shinn, Sheen, Chin, Seen | 911,556 |
| 임 (S) 림 (N) 6 |
林, 任 | Im (S) Rim (N) 6 |
Im (S) Rim (N) 6 |
Lim, Yim, Rim, Leem, Rhim | 735,493 |
| 한 | 韓, 漢 | Han | Han | Hahn, Hann | 715,556 |
| 오 | 伍, 吳 | O | O | Oh, Oe, Au | 706,908 |
| 서 | 西, 徐 | Seo | Sŏ | Suh, Su, Sur, So, Seu | 695,249 |
| 전 | 全, 田, 錢 | Jeon | Chŏn | Jun, Chun, Chon, Jeun, Cheon | 687,867 |
| 권 | 權 | Gwon | Kwŏn | Kwon, Kweon, Kwun, Gwon, Kwan | 652,495 |
| 황 | 黃 | Hwang | Hwang | Whang, Hoang | 644,294 |
| 송 | 宋, 松 | Song | Song | Soung, Shong, Sung | 639,082 |
| 안 | 安 | An | An | Ahn, Ann, Aan | 637,786 |
| 홍 | 洪 | Hong | Hong | Houng, Hyong | 518,635 |
| 양 (S) 량 (N) 1 |
梁, 楊, 樑, 襄 | Yang (S) Ryang (N) 1 |
Yang (S) Ryang (N) 1 |
Ryang, Yaung, Lyang | 486,645 |
| 고 | 高 | Go | Ko | Ko, Koh, Goh, Kho, Gho, Kor | 435,839 |
| 문 | 門, 文 | Mun | Mun | Moon | 426,927 |
| 손 | 孫 | Son | Son | Sohn, Shon, Soon, Soun, Sun | 415,182 |
| 배 | 裵 | Bae | Pae | Bai, Bea, Pae, Pai | 372,064 |
| 백 | 白 | Baek | Paek | Baik, Back, Paik, Paek, Beak | 351,275 |
| 허 | 許 | Heo | Hŏ | Hur, Huh, Her, Hu, Ho | 300,448 |
| 노 (S) 로 (N) |
盧, 魯, 路 | No (S) Ro (N) |
No (S) Ro (N) |
Noh, Roh, Ro, Rho, Nho | 290,434 |
| 남 | 南 | Nam | Nam | Nahm, Nham, Narm | 257,178 |
| 심 | 沈 | Sim | Sim | Shim, Seem, Sheem, Shimn, Sihm | 252,255 |
| 주 | 周, 朱 | Ju | Chu | Joo, Chu, Choo, Jou, Zoo | 215,010 |
| 하 | 河, 夏 | Ha | Ha | Hah, Har | 213,758 |
| 성 | 成, 星 | Seong | Sŏng | Sung, Soung, Seung, Song | 185,363 |
| 차 | 車 | Cha | Ch'a | Char, Chah, Tchah, Tcha | 180,589 |
| 우 | 于, 禹 | U | U | Woo, Wu, Ou, Wo, Uh | 180,141 |
| 나 (S) 라 (N) |
羅 | Na (S) Ra (N) |
Na (S) Ra (N) |
Ra, Nah, La, Rha, Rah | 172,022 |
| 진 | 晉, 眞, 陳, 秦 | Jin | Chin | Chin, Jean, Gin, Zhin, Chen | 170,980 |
| 민 | 閔 | Min | Min | Minn, Mihn | 159,054 |
| 지 | 智, 池 | Ji | Chi | Jee, Ch, Gi, Chee, Gee | 147,572 |
| 엄 | 嚴 | Eom | Ŏm | Um, Eum, Uhm, Aum, Oum, Ohm | 132,990 |
| 변 | 卞, 邊 | Byeon | Pyŏn | Byun, Byon, Pyun, Byoun, Pyon | 131,554 |
| 원 | 元, 袁, 苑 | Won | Wŏn | Weon, Woon, Wone, Wun, One | 120,465 |
| 방 | 方, 房, 邦, 龐 | Bang | Pang | Pang, Bhang, Bahng, Pahng, Phang | 119,703 |
| 채 | 采, 菜, 蔡 | Chae | Ch'ae | Chai, Che, Chea | 119,251 |
| 천 | 天, 千 | Cheon | Ch'ŏn | Chun, Chon, Chen, Choun | 112,227 |