How to Romanize Korean Names Romanization: Systems, Rules and Examples

Native Writing System

Korean is written using Hangul, a featural alphabet created in the 15th century under King Sejong the Great. Hangul consists of 14 basic consonants and 10 basic vowels, which combine into syllabic blocks. Each block represents a syllable, and the script is both phonemic and morphophonemic. The Korean alphabet is widely regarded as one of the most scientifically designed writing systems in the world.

Major Romanization Systems

Several romanization systems have been developed for Korean. The most prominent are Revised Romanization (RR), McCune‑Reischauer (MR), and Yale Romanization. Each serves different purposes and has distinct rules.

Recommended System by Use Case

For most English‑speaking audiences, Revised Romanization (RR) is recommended due to its simplicity, lack of diacritics, and official adoption by South Korea. It is ideal for travel guides, digital content, and general education. For academic papers in linguistics or history, McCune‑Reischauer remains common, especially in North Korean studies. Yale is preferred for morphophonemic analysis and language teaching materials that require precise underlying forms.

Alphabet or Character Chart

The following table maps basic Hangul characters to their Revised Romanization equivalents, with IPA where relevant.

Vowels

Korean has 10 basic vowels and 11 compound vowels. In Revised Romanization, simple vowels are represented as single letters or digraphs: a (ㅏ), eo (ㅓ), o (ㅗ), u (ㅜ), eu (ㅡ), i (ㅣ). Diphthongs use y before the vowel (e.g., ya, yeo, yo, yu) or w combinations (e.g., wa (ㅘ), wo (ㅝ), oe (ㅚ), wi (ㅟ), ui (ㅢ). Note that eo and eu are often mispronounced by English speakers; eo is similar to the u in “but,” and eu is like the u in “put” but unrounded.

Consonants

Korean consonants are classified into plain, aspirated, and tense (fortis) series. In RR, plain stops are voiced in initial position (e.g., ㄱ → g), while aspirated stops use k, t, p, ch. Tense consonants are represented by doubling the letter: kk, tt, pp, ss, jj. The liquid ㄹ is romanized as r initially and l finally, reflecting its allophonic variation. The final consonant ㅇ is ng; initial ㅇ is silent and omitted.

Diacritics and Tone Marks

Korean is not a tonal language, so tone marks are not used. However, McCune‑Reischauer employs a breve (˘) over vowels to indicate short vowels (e.g., ŏ, ŭ) and an apostrophe to mark aspiration (e.g., k’, t’, p’, ch’). Yale uses a macron for long vowels and a dot for tense consonants. The table below summarizes diacritics in MR.

Word Separation

In Korean romanization, words are generally separated by spaces, following the spacing rules of the native script. However, particles and auxiliary verbs are often attached to the preceding word in RR (e.g., hangeul-eun for 한글은). McCune‑Reischauer tends to separate particles with a hyphen (e.g., Han’gŭl-ŭn). For names, given names and family names are written as separate words (e.g., Kim Min‑su), though some systems hyphenate the given name (e.g., Kim Min-su).

Capitalization

Capitalization in romanized Korean follows English conventions: proper nouns (personal names, place names, titles) are capitalized. The first word of a sentence is capitalized. In RR, the first letter of each syllable in a given name is often capitalized (e.g., Kim Min‑Su), but the official recommendation is to capitalize only the first letter of the given name (e.g., Kim Min‑su). Consistency is key.

Names

Korean personal names typically consist of a one‑syllable family name (seong) followed by a two‑syllable given name (ireum). Romanization should preserve the order: family name first, given name last. For example, 김민수 → Kim Min‑su (RR). In MR, it would be Kim Minsu or Kim Min‑su. The given name may be written as one word or hyphenated; RR recommends hyphenation to indicate syllable boundaries. Note that some individuals prefer alternative spellings (e.g., Minsoo instead of Min‑su). Always respect personal preference when known.

Place Names

South Korea officially uses Revised Romanization for place names. For example, 서울 → Seoul (a special exception), 부산 → Busan, 대구 → Daegu, 제주 → Jeju. Historical place names may retain MR forms (e.g., Pusan for Busan). The National Institute of Korean Language provides a standardized list. For North Korean place names, McCune‑Reischauer is often used (e.g., 평양 → P’yŏngyang).

Examples

Below are three real‑world sentences in Hangul, RR romanization, and a pronunciation guide.

1. Hangul: 안녕하세요, 저는 김민수입니다.
   RR: Annyeonghaseyo, jeoneun Kim Min‑suimnida.
   Pronunciation: [an.ɲʌŋ.ha.se.jo] [tɕʌ.nɯn] [kim.min.su.im.ni.da]
2. Hangul: 부산은 한국의 제2의 도시입니다.
   RR: Busaneun Hangukui je‑iui dosiimnida.
   Pronunciation: [bu.sa.nɯn] [han.ɡu.ɡɰi] [tɕe.i.ɰi] [to.ɕi.im.ni.da]
3. Hangul: 한글은 과학적인 문자입니다.
   RR: Hangeureun gwahakjeogin munjaimnida.
   Pronunciation: [han.ɡɯ.ɾɯn] [kwa.hak.tɕʌ.ɡin] [mun.dʑa.im.ni.da]

Alternative Spellings

Due to historical usage or personal preference, alternative romanizations are common. For example, the family name 이 may be romanized as Lee, Yi, or Rhee (RR: I). The name 박 can appear as Park, Pak, or Bak. Such variants often reflect older systems (e.g., McCune‑Reischauer) or anglicized forms. When encountering a Korean name, it is advisable to check the individual’s preferred spelling.

Pronunciation Limitations

Romanization cannot fully capture Korean phonetics. For instance, the distinction between plain and tense consonants (e.g., ㄱ vs. ㄲ) is lost in many systems: RR writes g and kk, but English speakers may not produce the tenseness correctly. The vowel eo (ㅓ) is often mispronounced as “ee‑oh” instead of the correct [ʌ]. The liquid ㄹ varies between [ɾ] and [l] depending on position, but romanization uses r or l inconsistently. To mitigate these issues, learners should consult IPA transcriptions and audio resources.

Converter

Several online tools can convert Hangul to romanized text. The National Institute of Korean Language’s Romanization Converter (https://romanization.org/tools/nikl-converter/) supports RR and MR. Another popular tool is Korean Romanization Converter (https://romanization.org/tools/korean-romanization/), which offers multiple systems. For batch processing, Unicode CLDR provides transliteration rules. When using converters, verify the output against standard rules, as some tools may have errors.

“Consistent romanization is not merely a technical convenience; it is a bridge that enables accurate cross‑cultural communication and preserves the integrity of linguistic data.” — Dr. Samuel E. Martin, linguist and author of A Reference Grammar of Korean.