Revised Romanization of Korean
The Revised Romanization of Korean (RR) is the official system used in South Korea to transcribe the Korean alphabet, Hangul, into the Latin alphabet. Developed by the National Academy of the Korean Language starting in 1995 and officially released on July 7, 2000, by the Ministry of Culture, Sports and Tourism, RR was designed to standardize the way proper nouns—such as place names, personal names, and business names—are presented to the world.
The system was specifically implemented to prepare for the 2002 FIFA World Cup, ensuring that international visitors could navigate the country with ease. It replaced the older McCune–Reischauer system, which relied on special symbols like breves and apostrophes that were often omitted in digital text, leading to ambiguity in pronunciation.

Key Facts
- Official Status: The standard romanization system for South Korea since 2000.
- Primary Goal: To romanize proper nouns using only the 26 letters of the ISO basic Latin alphabet.
- Implementation Cost: Updating road signs and maps cost an estimated 500 to 600 billion won.
- Core Philosophy: Prioritizes visual simplicity and standard pronunciation over perfect phonetic precision.
- Passport Usage: A modified version is recommended for passports to avoid negative meanings in other languages.
How the Conversion Process Works
Converting Hangul to RR involves a systematic approach that balances spelling with actual pronunciation.
1. Pronunciation Adjustment
In most cases, the Hangul string is first swapped to reflect its standard pronunciation. For example, 독립문 (Dokripmun) is written as 동님문 (Dongnimmun) before being romanized. However, there are exceptions: personal given names and syllables separated by hyphens maintain their original spelling regardless of pronunciation.
2. Syllable Breakdown
Each syllable is broken down into jamo (individual letters). These are then converted using specific consonant and vowel tables. Some consonants change their romanization depending on whether they appear at the start or the end of a syllable.
3. Final Refinements
The final step involves applying formatting rules: capitalizing proper nouns, inserting spaces between family and given names, and adding hyphens before administrative units.
Romanization Tables
| Hangul | Initial Position | Final Position |
|---|---|---|
| ㄱ | g | k |
| ㄴ | n | — |
| ㄷ | d | t |
| ㄹ | r | l |
| ㅁ | m | — |
| ㅂ | b | p |
| ㅅ | s | t |
| ㅇ | — | ng |
| ㅈ | j | t |
| ㅎ | h | — |
Vowels are generally straightforward, with ㅓ becoming eo and ㅡ becoming eu. Special combinations like ㅝ are written as wo, and ㅢ is written as ui.
Hyphenation and Linguistic Nuances
Hyphens in RR serve different purposes and are categorized as either mandatory or optional.
- Mandatory Hyphens: Used to separate administrative units (e.g., Pyeongchang-gun).
- Optional Hyphens: Used to disambiguate pronunciation (e.g., Hae-undae) or between syllables of a given name (e.g., Hong Gil-dong).
The National Institute of Korean Language generally discourages optional hyphens, arguing that they are visually intrusive. They maintain that romanization cannot perfectly capture every phonetic nuance, similar to how the English word "lead" has two different pronunciations but one spelling.
For academic purposes where reversibility (the ability to convert the romanization back into the exact original Hangul) is required, a letter-by-letter transliteration variant is used. In this version, 독립 would be doglib rather than the pronunciation-based dongnip.
Practical Applications
Public Infrastructure
The transition to RR was comprehensive. By February 28, 2002, all Korean textbooks, maps, and cultural heritage signs were required to comply. This ensures consistency across railway stations, subway maps, and road signage throughout the country.
Passports and Personal Names
While RR is the standard, the South Korean government allows flexibility for passport names. A modified version is recommended to avoid names that might have negative connotations in other languages. For instance, the name 신 is encouraged to be written as SHIN rather than the strict RR SIN.

Frequently Asked Questions
Why was the Revised Romanization system created?
It was created to replace the McCune–Reischauer system, which used complex diacritics (like breves and apostrophes) that were difficult to type and often ignored, leading to confusion in pronunciation and spelling.
Are hyphens always required in Korean romanization?
No. Hyphens are mandatory only for administrative units. They are optional for disambiguating pronunciation or in given names, though the National Institute of Korean Language suggests avoiding them for better visual clarity.
How does RR handle consonants that sound different at the end of a word?
Certain consonants change based on position. For example, ㄱ is written as 'g' at the beginning of a word or before a vowel, but as 'k' when it appears at the end of a word or before another consonant.
Can I use a different romanization for my name on a South Korean passport?
Yes. While the government recommends a modified RR system, ad-hoc romanizations are permitted and have been supported by various court cases over time.
What is the difference between standard RR and the reversible variant?
Standard RR is based on pronunciation (e.g., dongnip), whereas the reversible variant is a letter-by-letter transliteration (e.g., doglib) used primarily in academic contexts to allow the original Hangul to be accurately retrieved.