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The Hepburn romanization system (ヘボン式ローマ字, Hebon-shiki Rōmaji^?) is named after James Curtis Hepburn, who used it to transcribe the sounds of the Japanese language into the Latin alphabet in the third edition of his Japanese–English dictionary, published in 1887. The system was originally proposed by the Society for the Romanization of the Japanese Alphabet [1] (羅馬字会 Rōmajikai) in 1885. The Hepburn system was subsequently revised and called Shūsei Hebon-shiki Rōmaji (修正ヘボン式ローマ字). This revised version was referred to as Hyōjun-shiki Rōmaji (標準式ローマ字) (standard style) before.

The original and revised variants of Hepburn remain the most widely used methods of transcription of Japanese. As Hepburn is based on English phonology, an English speaker unfamiliar with Japanese will generally pronounce a word romanized in Hepburn more accurately than a word romanized in the competing Kunrei-shiki Rōmaji (Cabinet-ordered system). Likewise, native Japanese speakers familiar with the Roman alphabet through the study of English tend to find Hepburn more comfortable for English context than Kunrei.

Contents 1 Legal status 2 Variants of Hepburn romanization 2.1 Obsolete variants 2.1.1 Second version 2.1.2 First version 3 Features of Hepburn romanization 3.1 Particles 3.2 Long vowels 3.3 Syllabic n 3.4 Double consonants 3.5 Variations 4 Hepburn romanization charts 4.1 For hiragana 4.2 For standard katakana 4.3 For extended katakana 5 External links

Hepburn is based on English phonology, not Japanese, and as such has faced some opposition in Japan. In particular, a September 21, 1937 cabinet ordinance proclaimed an alternative system now commonly known as Kunrei to be Japan's official romanization for all purposes, but this was overturned by the Supreme Commander Allied Powers (SCAP) during the Occupation of Japan. The (slightly revised) ordinance was reissued in 1954.

In 1972, a revised version of Hepburn was codified as ANSI standard Z39.11-1972. It was proposed in 1989 as a draft for ISO 3602, but rejected in favor of Kunrei. The Z39.11-1972 standard was consequently deprecated on October 6, 1994.

Although Hepburn is not a government standard, some government agencies mandate it. For example, the Ministry of Foreign Affairs requires the use of Hepburn on passports, and the Ministry of Land, Infrastructure and Transport requires the use of Hepburn on transport signs, including road signs and railway station signs.

In many other areas where it lacks de jure status, Hepburn remains the de facto standard. Signs and notices in city offices and police stations, at shrines, temples and attractions also use it. English-language newspapers and media use the simplified form of Hepburn. Cities and prefectures use it in information for English-speaking residents and visitors, and English-language publications by the Japanese Foreign Ministry use simplified Hepburn too. Official tourism information put out by the government uses it, as do guidebooks, local and foreign, on Japan.

Many students of Japanese as a foreign language learn Hepburn.

There are three standard variants of Hepburn romanization.

• The first is traditional Hepburn, which renders long vowels and syllabic n in a variety of ways. This corresponds to the third edition (1886) of Hepburn's dictionary^[1], although changes in kana usage must be accounted for.

• The second is revised Hepburn, a revised version of traditional Hepburn, in which the rendering of syllabic n as m before certain consonants is no longer used. This is used by the Library of Congress. (Revised Hepburn may be referred to as modified Hepburn.)

• The third is modified Hepburn, which builds on revised Hepburn to further modify traditional Hepburn. This version is consistent in its treatment of long vowels (always doubling the vowel) and syllabic n (always n-bar). It has been adopted by some major dictionaries (e.g. the Pocket Kenkyusha Japanese Dictionary published by Oxford University Press), but is still mainly the preserve of linguists. (The term modified Hepburn may be used to refer to revised Hepburn.)

In Japan itself, there are three variants officially mandated for various uses:

• Railway Standard (鉄道掲示基準規程) [2], in which the rendering of syllabic n as m before b, m, p is used. All JR railways and major railways use this type for station names.
• Ministry of Foreign Affairs standard (外務省旅券規定) [3], in which the rendering of syllabic n as m before b, m, p is used and the spelling oh for word-finial long o is allowed (e.g. Satoh for 佐藤). This is used to romanize Japanese names in passports and is thus also known as "Passport Hepburn".
• Ministry of Land, Infrastructure and Transport standard [4] in which the rendering of syllabic n as m before certain consonants is not used. This is used for road signs.

Details of these variants can be found below.

The romanizations set out in the first and second versions of Hepburn's dictionary are primarily of historical interest. Notable differences to the third and later versions include:

• エ, ヱ are written as ye (e.g. Yedo)
• ズ is written as dzu (e.g. kudzu)
• キャ,キョ,キュ are written as kiya, kiyo and kiu
• クワ,クワイ are written as kwa, kwai (e.g. Kwannon)

The following differences are in addition to those in the second version:

• ス is written as sz
• ツ is written as tsz
• ズ,ヅ is written as dz
• クワ,クワイ are written as kuwa, kuwai

The main feature of Hepburn is that its spelling is based on English phonology. More technically, where syllables constructed systematically according to the Japanese syllabary contain the "unstable" consonant for the modern spoken language, the orthography is changed to something that, as an English speaker would pronounce it, better matches the real sound, for example し is written shi not *si.

Some linguists object to Hepburn, as the pronunciation-based spellings can obscure the systematic origins of Japanese phonetic structures, inflections, and conjugations. Supporters argue that Hepburn is not intended as a linguistic tool.

• When he へ is used as a particle it is written e.
• When ha は is used as a particle it is written wa.
• When wo を is used as a particle it is written o.

In traditional and revised Hepburn:

• The long vowels o and u are indicated by a macron—e.g., long o is written ō.
• In words of Japanese or Chinese origin, the long vowel e is written ei.
• In words of Japanese or Chinese origin, the long vowel i is written ii.
• In words of foreign origin, all long vowels are indicated by macrons.

In modified Hepburn:

• All long vowels are indicated by doubling the vowel, e.g. long o is written oo.
  • The combination ei is reserved for cases where the two vowels are pronounced as distinct sounds, e.g. in the word Supein (スペイン), meaning "Spain".

In traditional Hepburn:

• Syllabic n (ん) is written as n before consonants, but as n' (with an apostrophe) before vowels and y. It is written as m before other labial consonants, i.e. b, m, and p.

In revised Hepburn:

• The rendering m before labial consonants is not used, being replaced with n. It is still written n' before vowels and y.

In modified Hepburn:

• Syllabic n is always written as n with a macron (n̄), such as is used to indicate long vowels in traditional Hepburn. (This can be achieved on word processors through the use of various specialized fonts, e.g. Times Gandhari.) This renders the use of apostrophes unnecessary.

• Double (or "geminate") consonants are marked by doubling the consonant following the sokuon, っ, except for sh→ssh, ch→tch, ts→tts.

Variations of the Hepburn system indicate the long vowels ō and ū as follows:

• Tōkyō: indicated with macrons. This follows the rules of the traditional and revised Hepburn systems, and is considered to be standard.
• Tokyo: not indicated at all. This is common for Japanese words that have been adopted into English. This is also the convention used in the de facto Hepburn used in signs and other English-language information around Japan, mentioned in the paragraph on legal status.
• Tôkyô: indicated with circumflexes. Circumflexes are how long vowels are indicated by the alternative Nihon-shiki and Kunrei-shiki romanizations. Circumflexes are often used when a word processor does not allow macrons. With the spread of Unicode, this is becoming rare.
• Tohkyoh: indicated with an "h". This is sometimes known as "passport Hepburn", as the Japanese Foreign Ministry has authorized (but not required) this usage in passports. [5]
• Toukyou: written using kana spelling: ō as ou or oo (depending on the kana) and ū as uu. This is sometimes called wāpuro style, as this is how text is entered into a Japanese word processor (wādo purosessā) using a keyboard with Roman characters. This method most accurately represents the way that vowels are written in kana, differentiating between おう (as in とうきょう (東京), written Toukyou in this system) and おお (as in とおい (遠い), written tooi in this system).
• Tookyoo: written by doubling the long vowels. This follows the rules of the modified Hepburn system, but is also common when writing words of foreign origin without reference to any particular system, i.e. paatii for パーティー ("party") instead of pātī. This is also used in the JSL form of romanization.

あ a	い i	う u	え e	お o	(ya)	(yu)	(yo)
か ka	き ki	く ku	け ke	こ ko	きゃ kya	きゅ kyu	きょ kyo
さ sa	し shi	す su	せ se	そ so	しゃ sha	しゅ shu	しょ sho
た ta	ち chi	つ tsu	て te	と to	ちゃ cha	ちゅ chu	ちょ cho
な na	に ni	ぬ nu	ね ne	の no	にゃ nya	にゅ nyu	にょ nyo
は ha	ひ hi	ふ fu	へ he	ほ ho	ひゃ hya	ひゅ hyu	ひょ hyo
ま ma	み mi	む mu	め me	も mo	みゃ mya	みゅ myu	みょ myo
や ya		ゆ yu		よ yo
ら ra	り ri	る ru	れ re	ろ ro	りゃ rya	りゅ ryu	りょ ryo
わ wa	ゐ wi†		ゑ we†	を wo‡
				ん n
が ga	ぎ gi	ぐ gu	げ ge	ご go	ぎゃ gya	ぎゅ gyu	ぎょ gyo
ざ za	じ ji	ず zu	ぜ ze	ぞ zo	じゃ ja	じゅ ju	じょ jo
だ da	ぢ (ji)	づ (zu)	で de	ど do	ぢゃ (ja)	ぢゅ (ju)	ぢょ (jo)
ば ba	び bi	ぶ bu	べ be	ぼ bo	びゃ bya	びゅ byu	びょ byo
ぱ pa	ぴ pi	ぷ pu	ぺ pe	ぽ po	ぴゃ pya	ぴゅ pyu	ぴょ pyo

ア a	イ i	ウ u	エ e	オ o	(ya)	(yu)	(yo)
カ ka	キ ki	ク ku	ケ ke	コ ko	キャ kya	キュ kyu	キョ kyo
サ sa	シ shi	ス su	セ se	ソ so	シャ sha	シュ shu	ショ sho
タ ta	チ chi	ツ tsu	テ te	ト to	チャ cha	チュ chu	チョ cho
ナ na	ニ ni	ヌ nu	ネ ne	ノ no	ニャ nya	ニュ nyu	ニョ nyo
ハ ha	ヒ hi	フ fu	ヘ he	ホ ho	ヒャ hya	ヒュ hyu	ヒョ hyo
マ ma	ミ mi	ム mu	メ me	モ mo	ミャ mya	ミュ myu	ミョ myo
ヤ ya		ユ yu		ヨ yo
ラ ra	リ ri	ル ru	レ re	ロ ro	リャ rya	リュ ryu	リョ ryo
ワ wa	ヰ wi†		ヱ we†	ヲ wo‡
				ン n
ガ ga	ギ gi	グ gu	ゲ ge	ゴ go	ギャ gya	ギュ gyu	ギョ gyo
ザ za	ジ ji	ズ zu	ゼ ze	ゾ zo	ジャ ja	ジュ ju	ジョ jo
ダ da	ヂ (ji)	ヅ (zu)	デ de	ド do	ヂャ (ja)	ヂュ (ju)	ヂョ (jo)
バ ba	ビ bi	ブ bu	ベ be	ボ bo	ビャ bya	ビュ byu	ビョ byo
パ pa	ピ pi	プ pu	ペ pe	ポ po	ピャ pya	ピュ pyu	ピョ pyo

These are used mainly to represent the sounds in words in other languages. Most of these are not formally standardized.^{[citation needed]}

			イェ ye
	ウィ wi		ウェ we	ウォ wo
ヷ va†	ヸ vi†		ヹ ve†	ヺ vo†
ヴァ va	ヴィ vi	ヴ vu	ヴェ ve	ヴォ vo
			シェ she
			ジェ je
			チェ che
	ティ ti	トゥ tu
		テュ tyu
	ディ di	ドゥ du
		デュ dyu
ツァ tsa			ツェ tse	ツォ tso
ファ fa	フィ fi		フェ fe	フォ fo
		フュ fyu

• † — The characters in red are obsolete in modern Japanese.
• ‡ — The character ヲ wo is used only as a particle in modern Japanese, so it should be written o phonetically.
• Parentheses — The characters in parentheses are used only when rendaku occurs on ち chi or つ tsu.

• Preface of first edition of Hepburn's original dictionary, explaining romanization
• Preface of third edition of Hepburn's original dictionary, explaining romanization
• Hepburn-based Romaji-to-Kana converter - Supports extended Katakana

v • d • e Romanization of Japanese
Hepburn | JSL | Kunrei-shiki (ISO 3602) | Nihon-shiki (ISO 3602 Strict) | Wāpuro