Sung 성 — Korean last name
Is Sung a Korean last name?
Yes. Sung (Hangul: 성, Hanja: 成) is a Korean family name recorded in the 2015 South Korean census with 199,160 holders, making it the #36 most common of the 191 surnames counted. Roughly one in every 250 South Koreans is a Sung. It is a well-established name you will meet regularly in Korea and in Korean communities abroad.
How to write Sung in Korean
In Hangul, Sung is written 성. The same Hangul syllable is used by 4 different Hanja (Chinese characters): 成, 盛, 星, 城. Each character is technically a separate surname with its own clans and ancestry, even though they sound identical and are romanized the same way. The most common by far is 成.
What does Sung mean?
The character 成 means to accomplish, to complete. As with most Korean surnames, the meaning comes from the Chinese character rather than from the Korean sound, so it says something about how the name was first written down (often a place, a virtue, an object or a Chinese dynasty) rather than describing the family. Koreans rarely think about the literal meaning of a surname in daily life, but it matters for genealogy and for choosing given names that pair well with it.
Major Sung clans (bon-gwan)
Korean surnames are subdivided by bon-gwan — the ancestral hometown of the clan founder. Two people named Sung from different bon-gwan are considered unrelated. The best-known Sung clans are: Changnyeong Sung. The place name comes first (for example "Gimhae Kim" means the Kim clan whose founder settled in Gimhae).
How common is Sung?
Sung is common Korean surname. Just above it in the rankings is Kwak (203,365) and just below it is Woo (195,729). For comparison, Kim, the most common surname, has 10,689,967 holders. All figures come from Statistics Korea's 2015 Population and Housing Census, which only counts surnames held by five or more people.
Spellings and romanization
Sung is the spelling most Korean families use on passports and in English. The official Revised Romanization (used by the South Korean government since 2000) is Seong, and the older McCune–Reischauer system gives Sŏng. Other spellings you will see in real life include Sung, Soung, Seoung, Seung, Song. The variety exists because Korean passport rules let each family choose its own romanization, so spellings drifted over generations of emigration; in Korean, every one of these is the same 성.
How to pronounce Sung
Sung is pronounced "sung" (성), rhymes with hung.
Is Sung Chinese or Korean?
Both, in a sense — the character is shared, the family is not. Korean surnames were written with Chinese characters for over a thousand years, so nearly every Korean surname has a Chinese (and Vietnamese) reading: 成 is Chéng in Mandarin and Thành in Vietnamese. A Korean Sung and a Chinese family with the same character are not related; they simply adopted the same character at different times and places. If someone spells their name "Sung" they are almost certainly Korean, because the Chinese and Vietnamese romanizations look different. See our full guide to Korean vs Chinese last names.
Related Korean surnames
Frequently asked questions about Sung
Is Sung a Korean or Chinese last name?
Sung as spelled is Korean (성). The Hanja 成 is also used as a surname in China and Vietnam, but with different romanizations (Chéng in Mandarin, Thành in Vietnamese). The families are not related.
How many people have the last name Sung?
199,160 people in South Korea had the surname Sung (성) in the 2015 census, or 0.40% of the population. That makes it the #36 most common Korean surname.
How do you write Sung in Korean?
Sung is written 성 in Hangul. In Hanja it is 成 or 盛 or 星 or 城, which are separate lineages sharing one pronunciation.
What does the Korean last name Sung mean?
The Hanja 成 means "to accomplish, to complete". Korean surname meanings come from the Chinese character the name is written with, not from the Korean sound.
Source: Statistics Korea (KOSIS), 2015 Population and Housing Census, surnames by Hangul with five or more holders (total population 49,705,663). Hanja meanings from standard Hanja dictionaries. Check another surname.