The Most Common Korean Surnames (Kim, Lee, Park) and Their Origins

If it feels like half of Korea is named Kim, Lee, or Park — that’s nearly true. Just three surnames cover roughly 45% of the population, and the top handful account for more than half. Here’s why, and what those names mean.

The big five

• Kim (김, 金) — “gold.” Korea’s most common surname, around one in five people.
• Lee (이, 李) — “plum tree.” Romanized many ways: Lee, Yi, Rhee. About one in seven.
• Park / Bak (박, 朴) — “magnolia” or “simple, unadorned,” tied to the founding myth of the Silla kingdom.
• Choi (최, 崔) — “lofty, towering,” suggesting a high mountain. Also spelled Choe.
• Jeong (정, 鄭) — a place-derived clan name; also romanized Jung, Chung.

After these come Kang, Cho/Jo, Yoon, Jang, Lim, Han, and others — but the curve drops off fast. Korea has only a few hundred surnames in total, far fewer than most countries.

Why so few surnames?

For much of Korean history, surnames belonged mainly to the aristocracy. As the class system loosened — especially in the late Joseon era and after — many families adopted the prestigious surnames of powerful clans. Over generations the common names grew more common still, concentrating the population into a short list.

The clan seat (bon-gwan)

Here’s the twist: two people named Kim may not be related at all. Korean surnames are divided by 본관 (bon-gwan) — an ancestral “clan seat,” the place a lineage traces back to. The Gimhae Kim and the Gyeongju Kim are different clans who happen to share the written surname.

Traditionally, people of the same surname and the same bon-gwan were considered kin, and marriage between them was avoided. So a full identity is really surname + clan seat, not the surname alone.

Surname first, and rarely two syllables

Remember that the surname comes first in Korean: in Kim Min-jun, Kim is the family name. Almost all surnames are a single syllable; a small number are two — like Namgung (남궁) or Hwangbo (황보). For the full structure, see How Korean Names Actually Work.

Choosing a surname for your own Korean name

If you’re getting a Korean name of your own, the surname is usually the first choice — many people pick one whose sound or meaning they like, then build a given name to pair with it. Because the given name’s flow depends on the surname it sits beside, the two are really chosen together. That pairing is part of getting an authentic Korean name.