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| Japanese kanji | |
|---|---|
| Name | Kanji |
| Native name | 漢字 |
| Type | Logographic characters |
| Region | East Asia |
| Family | Chinese characters |
Japanese kanji are the set of logographic characters used in the Japanese language that were adopted and adapted from Chinese characters beginning in antiquity. They coexist with hiragana, katakana, and rōmaji within modern Japanese orthography and appear in personal names, official documents, literature, signage, and digital media. Kanji form a core component of written Japanese alongside kana systems used in texts ranging from The Tale of Genji manuscripts to contemporary NHK broadcasts and corporate Sony documentation.
Kanji entered Japan via cultural transmission from Silla, Baekje, and Tang dynasty China through channels including diplomatic missions, Buddhist monks such as Kūkai and Saichō, and scholars associated with the Nara period and Heian period. Early adopters used kanji for kanbun style reading in works like the Kojiki and Nihon Shoki, influencing court literature including The Tale of Genji and waka poetry by figures such as Murasaki Shikibu and Ki no Tsurayuki. Throughout the Kamakura period and Muromachi period kanji interacted with Buddhist texts transmitted by monks linked to Enryaku-ji and cultural exchanges with Song dynasty China. Meiji-era reforms under officials influenced by contacts with Great Britain, France, and United States governments led to standardization efforts, while post-World War II policies influenced by the Allied occupation of Japan produced the modern Tōyō kanji and later Jōyō kanji lists.
Within the Japanese writing system kanji are classified by provenance and function: many characters retain Han readings from Middle Chinese traditions and are grouped by onyomi and kunyomi distinctions used by scholars at institutions like Tokyo University and Kyoto University. Traditional classification schemes such as the Kangxi Dictionary radicals persist alongside modern indexing systems employed by publishers like Kodansha and standards maintained by Agency for Cultural Affairs (Japan). Kanji are organized by radicals and stroke count similar to methods used in the Xinhua Zidian and referencing sources such as the Zhongwen Da Cidian; school textbooks and reference works produced by houses including Shogakukan and Iwanami Shoten adapt these schemes for learners.
Kanji support multiple readings: onyomi originating in contact with Tang dynasty and Song dynasty pronunciations, and kunyomi tied to native Japanese vocabulary used in poetry by figures like Bashō and prose by Natsume Sōseki. Proper names employ readings standardized by municipal and national registries administered by prefectural offices such as Tokyo Metropolitan Government and ministries including the Ministry of Justice (Japan). Lexicographical resources from publishers like Sanseido and databases hosted by academic centers including the National Institute for Japanese Language and Linguistics document pronunciation variants and pitch accent patterns also studied in phonology research at University of Tokyo and Osaka University.
Stroke order conventions derive from Chinese calligraphic traditions practiced in schools associated with Shōtōkan and institutions teaching Shodo; masters such as Sesshū Tōyō influenced ink-brush aesthetics preserved in collections at Tokyo National Museum and Kyoto National Museum. Correct stroke order is taught in textbooks from ministries and cultural bodies and affects legibility in typefaces designed by foundries like Morita Type Foundry and companies such as Monotype. Calligraphic styles including kaisho, gyosho, and sosho are practiced in dojos, art schools, and competitions sponsored by organizations like the Japan Calligraphy Education Foundation and exhibited at venues such as Tokyo Big Sight.
The Gakushū curriculum and the Ministry of Education, Culture, Sports, Science and Technology (MEXT) determine the jōyō kanji taught across elementary and secondary schooling, with kanji acquisition forming part of standardized examinations including the Tokyo Metropolitan Board of Education assessments and civil service exams managed by national ministries. Supplementary study often uses resources from publishers like Benesse Corporation, Z-Kai, and cram schools such as Yoyogi Seminar and Kawaijuku, while proficiency testing is conducted by organizations including the Japan Kanji Aptitude Testing Foundation and international programs like the Japanese-Language Proficiency Test. Scholarly research on acquisition appears in journals affiliated with Sophia University and Hitotsubashi University.
Kanji are encoded in standards such as Unicode and earlier mappings like Shift JIS, EUC-JP, and ISO-2022-JP used by technology companies including NEC, Fujitsu, and Microsoft Japan. Input methods include kana-to-kanji conversion engines developed by firms like Google and ATOK (by JustSystems), and software libraries used by platforms such as NHK On Demand and Rakuten. Font rendering and glyph design involve foundries and projects including Adobe, Google Noto Fonts, and open-source efforts, while issues such as han unification and compatibility have engaged standardization bodies like the Unicode Consortium and national agencies including METI.
Contemporary debates over kanji reform involve stakeholders from media organizations such as Asahi Shimbun and Yomiuri Shimbun, publishers like Kodansha, academic bodies at Waseda University and Keio University, and policymaking by MEXT. Reforms such as the jōyō kanji revisions and proposals for simplification have prompted responses from cultural institutions like Japan Foundation and legislative discussions in the Diet of Japan. Globalization and technologies developed by firms including Apple Inc., Google, and LINE Corporation continue to influence how kanji are taught, displayed, and processed across platforms used by corporations like Toyota and broadcasters like NHK World.