| Adlm | Adlam | Only for use in ONIX 3.0 or later | 38 | |
| Afak | Afaka | Script is not supported by Unicode | 13 | |
| Aghb | Caucasian Albanian | Ancient/historic script. Only for use in ONIX 3.0 or later | 38 | |
| Ahom | Ahom, Tai Ahom | Ancient/historic script. Only for use in ONIX 3.0 or later | 38 | |
| Arab | Arabic | | 9 | |
| Aran | Arabic (Nastaliq variant) | Typographic variant of Arabic. Only for use in ONIX 3.0 or later | 38 | |
| Armi | Imperial Aramaic | Ancient/historic script | 9 | |
| Armn | Armenian | | 9 | |
| Avst | Avestan | Ancient/historic script | 9 | |
| Bali | Balinese | | 9 | |
| Bamu | Bamun | | 13 | |
| Bass | Bassa Vah | Ancient/historic script | 13 | |
| Batk | Batak | | 9 | |
| Beng | Bengali (Bangla) | | 9 | 38 |
| Bhks | Bhaiksuki | Ancient/historic script. Only for use in ONIX 3.0 or later | 38 | |
| Blis | Blissymbols | Script is not supported by Unicode | 9 | |
| Bopo | Bopomofo | | 9 | |
| Brah | Brahmi | Ancient/historic script | 9 | |
| Brai | Braille | | 9 | |
| Bugi | Buginese | | 9 | |
| Buhd | Buhid | | 9 | |
| Cakm | Chakma | | 9 | |
| Cans | Unified Canadian Aboriginal Syllabics | | 9 | |
| Cari | Carian | Ancient/historic script | 9 | |
| Cham | Cham | | 9 | |
| Cher | Cherokee | | 9 | |
| Chrs | Chorasmian | Khwārezmian. Ancient/historic script. Only for use in ONIX 3.0 or later | 61 | |
| Cirt | Cirth | Script is not supported by Unicode | 9 | |
| Copt | Coptic | Ancient/historic script | 9 | |
| Cpmn | Cypro-Minoan | Ancient/historic script. Only for use in ONIX 3.0 or later | 61 | |
| Cprt | Cypriot | Ancient/historic script | 9 | |
| Cyrl | Cyrillic | | 9 | |
| Cyrs | Cyrillic (Old Church Slavonic variant) | Ancient/historic, typographic variant of Cyrillic | 9 | |
| Deva | Devanagari (Nagari) | | 9 | |
| Diak | Dives Akuru | Ancient/historic script. Only for use in ONIX 3.0 or later | 61 | |
| Dogr | Dogra | Only for use in ONIX 3.0 or later | 38 | 61 |
| Dsrt | Deseret (Mormon) | | 9 | |
| Dupl | Duployan shorthand, Duployan stenography | | 13 | |
| Egyd | Egyptian demotic | Script is not supported by Unicode | 9 | |
| Egyh | Egyptian hieratic | Script is not supported by Unicode | 9 | |
| Egyp | Egyptian hieroglyphs | Ancient/historic script | 9 | |
| Elba | Elbasan | Ancient/historic script | 13 | |
| Elym | Elymaic | Ancient/historic script. Only for use in ONIX 3.0 or later | 61 | |
| Ethi | Ethiopic (Ge‘ez) | | 9 | |
| Geok | Khutsuri (Asomtavruli and Khutsuri) | Georgian in Unicode | 9 | |
| Geor | Georgian (Mkhedruli and Mtavruli) | | 9 | 38 |
| Glag | Glagolitic | Ancient/historic script | 9 | |
| Gong | Gunjala Gondi | Only for use in ONIX 3.0 or later | 38 | 61 |
| Gonm | Masaram Gondi | Only for use in ONIX 3.0 or later | 38 | |
| Goth | Gothic | Ancient/historic script | 9 | |
| Gran | Grantha | Ancient/historic script | 13 | |
| Grek | Greek | | 9 | |
| Gujr | Gujarati | | 9 | |
| Guru | Gurmukhi | | 9 | |
| Hanb | Han with Bopomofo | See Hani, Bopo. Only for use in ONIX 3.0 or later | 38 | |
| Hang | Hangul (Hangŭl, Hangeul) | | 9 | |
| Hani | Han (Hanzi, Kanji, Hanja) | | 9 | |
| Hano | Hanunoo (Hanunóo) | | 9 | |
| Hans | Han (Simplified variant) | Subset of Hani | 9 | |
| Hant | Han (Traditional variant) | Subset of Hani | 9 | |
| Hatr | Hatran | Ancient/historic script. Only for use in ONIX 3.0 or later | 38 | |
| Hebr | Hebrew | | 9 | |
| Hira | Hiragana | | 9 | |
| Hluw | Anatolian Hieroglyphs (Luwian Hieroglyphs, Hittite Hieroglyphs) | Ancient/historic script. Only for use in ONIX 3.0 or later | 38 | |
| Hmng | Pahawh Hmong | | 9 | |
| Hmnp | Nyiakeng Puachue Hmong | Only for use in ONIX 3.0 or later | 61 | |
| Hrkt | Japanese syllabaries (alias for Hiragana + Katakana) | See Hira, Kana | 9 | |
| Hung | Old Hungarian (Hungarian Runic) | Ancient/historic script | 9 | 38 |
| Inds | Indus (Harappan) | Script is not supported by Unicode | 9 | |
| Ital | Old Italic (Etruscan, Oscan, etc.) | Ancient/historic script | 9 | |
| Jamo | Jamo (alias for Jamo subset of Hangul) | Subset of Hang. Only for use in ONIX 3.0 or later | 38 | |
| Java | Javanese | | 9 | |
| Jpan | Japanese (alias for Han + Hiragana + Katakana) | See Hani, Hira and Kana | 13 | |
| Jurc | Jurchen | Script is not supported by Unicode | 13 | |
| Kali | Kayah Li | | 9 | |
| Kana | Katakana | | 9 | |
| Kawi | Kawi | Ancient/historic script. Only for use in ONIX 3.0 or later | 61 | |
| Khar | Kharoshthi | Ancient/historic script | 9 | |
| Khmr | Khmer | | 9 | |
| Khoj | Khojki | Ancient/historic script | 16 | |
| Kitl | Khitan large script | Script is not supported by Unicode. Only for use in ONIX 3.0 or later | 38 | |
| Kits | Khitan small script | Only for use in ONIX 3.0 or later | 38 | 61 |
| Knda | Kannada | | 9 | |
| Kore | Korean (alias for Hangul + Han) | See Hani and Hang | 9 | |
| Kpel | Kpelle | Script is not supported by Unicode | 13 | |
| Kthi | Kaithi | Ancient/historic script | 9 | |
| Lana | Tai Tham (Lanna) | | 9 | 38 |
| Laoo | Lao | | 9 | |
| Latf | Latin (Fraktur variant) | Typographic variant of Latin | 9 | |
| Latg | Latin (Gaelic variant) | Typographic variant of Latin | 9 | |
| Latn | Latin | | 9 | |
| Leke | Leke | Script is not supported by Unicode. Only for use in ONIX 3.0 or later | 38 | |
| Lepc | Lepcha (Róng) | | 9 | |
| Limb | Limbu | | 9 | |
| Lina | Linear A | Ancient/historic script | 9 | |
| Linb | Linear B | Ancient/historic script | 9 | |
| Lisu | Lisu (Fraser) | | 13 | |
| Loma | Loma | Script is not supported by Unicode | 13 | |
| Lyci | Lycian | Ancient/historic script | 9 | |
| Lydi | Lydian | Ancient/historic script | 9 | |
| Mahj | Mahajani | Ancient/historic script. Only for use in ONIX 3.0 or later | 38 | |
| Maka | Makasar | Only for use in ONIX 3.0 or later | 38 | |
| Mand | Mandaic, Mandaean | | 9 | |
| Mani | Manichaean | Ancient/historic script | 9 | |
| Marc | Marchen | Ancient/historic script. Only for use in ONIX 3.0 or later | 38 | |
| Maya | Mayan hieroglyphs | Script is not supported by Unicode | 9 | |
| Medf | Medefaidrin (Oberi Okaime, Oberi Ɔkaimɛ) | Script is not supported by Unicode. Only for use in ONIX 3.0 or later | 38 | |
| Mend | Mende Kikakui | | 13 | 38 |
| Merc | Meroitic Cursive | Ancient/historic script | 13 | |
| Mero | Meroitic Hieroglyphs | Ancient/historic script | 9 | |
| Mlym | Malayalam | | 9 | |
| Modi | Modi, Moḍī | Ancient/historic script. Only for use in ONIX 3.0 or later | 38 | |
| Mong | Mongolian | Includes Clear, Manchu scripts | 9 | |
| Moon | Moon (Moon code, Moon script, Moon type) | Script is not supported by Unicode | 13 | |
| Mroo | Mro, Mru | | 13 | |
| Mtei | Meitei Mayek (Meithei, Meetei) | | 13 | |
| Mult | Multani | Ancient/historic script. Only for use in ONIX 3.0 or later | 38 | |
| Mymr | Myanmar (Burmese) | | 9 | |
| Nagm | Nag Mundari | Only for use in ONIX 3.0 or later | 61 | |
| Nand | Nandinagari | Ancient/historic script. Only for use in ONIX 3.0 or later | 61 | |
| Narb | Old North Arabian (Ancient North Arabian) | Ancient/historic script | 13 | |
| Nbat | Nabatean | Ancient/historic script | 13 | |
| Newa | Newa, Newar, Newari, Nepāla lipi | Only for use in ONIX 3.0 or later | 38 | |
| Nkgb | Nakhi Geba (’Na-’Khi ²Ggŏ-¹baw, Naxi Geba) | Script is not supported by Unicode | 13 | |
| Nkoo | N’Ko | | 9 | |
| Nshu | Nüshu | | 13 | |
| Ogam | Ogham | Ancient/historic script | 9 | |
| Olck | Ol Chiki (Ol Cemet’, Ol, Santali) | | 9 | |
| Orkh | Old Turkic, Orkhon Runic | Ancient/historic script | 13 | |
| Orya | Oriya (Odia) | | 9 | 38 |
| Osge | Osage | Only for use in ONIX 3.0 or later | 38 | |
| Osma | Osmanya | | 9 | |
| Ougr | Old Uyghur | Ancient/historic script. Only for use in ONIX 3.0 or later | 61 | |
| Palm | Palmyrene | Ancient/historic script | 13 | |
| Pauc | Pau Cin Hau | Only for use in ONIX 3.0 or later | 38 | |
| Perm | Old Permic | Ancient/historic script | 9 | |
| Phag | Phags-pa | Ancient/historic script | 9 | |
| Phli | Inscriptional Pahlavi | Ancient/historic script | 9 | |
| Phlp | Psalter Pahlavi | Ancient/historic script | 9 | |
| Phlv | Book Pahlavi | Script is not supported by Unicode | 9 | |
| Phnx | Phoenician | Ancient/historic script | 9 | |
| Piqd | Klingon (KLI plqaD) | Script is not supported by Unicode. Only for use in ONIX 3.0 or later | 38 | |
| Plrd | Miao (Pollard) | | 13 | |
| Prti | Inscriptional Parthian | Ancient/historic script | 9 | |
| Qaaa | Reserved for private use (start) | | 9 | |
| Qabp | Picture Communication Symbols (PCS) | ONIX local code for graphical symbols used in augmentative and alternative communication and education, not listed in ISO 15924. Only for use in ONIX 3.0 or later | 62 | |
| Qabw | Widgit symbols | ONIX local code for graphical symbols used in augmentative and alternative communication and education, not listed in ISO 15924. Only for use in ONIX 3.0 or later | 62 | |
| Qabx | Reserved for private use (end) | | 9 | |
| Rjng | Rejang (Redjang, Kaganga) | | 9 | |
| Roro | Rongorongo | Script is not supported by Unicode | 9 | |
| Runr | Runic | Ancient/historic script | 9 | |
| Samr | Samaritan | | 9 | |
| Sara | Sarati | Script is not supported by Unicode | 9 | |
| Sarb | Old South Arabian | Ancient/historic script | 13 | |
| Saur | Saurashtra | | 9 | |
| Sgnw | SignWriting | | 13 | |
| Shaw | Shavian (Shaw) | | 9 | |
| Shrd | Sharada, Śāradā | | 13 | |
| Sidd | Siddham, Siddhaṃ, Siddhamātṛkā | Ancient/historic script. Only for use in ONIX 3.0 or later | 38 | |
| Sind | Khudawadi, Sindhi | | 13 | |
| Sinh | Sinhala | | 13 | |
| Sogd | Sogdian | Ancient/historic script. Only for use in ONIX 3.0 or later | 61 | |
| Sogo | Old Sogdian | Ancient/historic script. Only for use in ONIX 3.0 or later | 61 | |
| Sora | Sora Sompeng | | 13 | |
| Soyo | Soyombo | Only for use in ONIX 3.0 or later | 38 | |
| Sund | Sundanese | | 9 | |
| Sylo | Syloti Nagri | | 9 | |
| Syrc | Syriac | | 9 | |
| Syre | Syriac (Estrangelo variant) | Typographic variant of Syriac | 9 | |
| Syrj | Syriac (Western variant) | Typographic variant of Syriac | 9 | |
| Syrn | Syriac (Eastern variant) | Typographic variant of Syriac | 9 | |
| Tagb | Tagbanwa | | 9 | |
| Takr | Takri, Ṭākrī, Ṭāṅkrī | | 13 | |
| Tale | Tai Le | | 9 | |
| Talu | New Tai Lue | | 9 | |
| Taml | Tamil | | 9 | |
| Tang | Tangut | Ancient/historic script | 13 | |
| Tavt | Tai Viet | | 9 | |
| Telu | Telugu | | 9 | |
| Teng | Tengwar | Script is not supported by Unicode | 9 | |
| Tfng | Tifinagh (Berber) | | 9 | |
| Tglg | Tagalog (Baybayin, Alibata) | | 9 | |
| Thaa | Thaana | | 9 | |
| Thai | Thai | | 9 | |
| Tibt | Tibetan | | 9 | |
| Tirh | Tirhuta | | 16 | 38 |
| Tnsa | Tangsa | Only for use in ONIX 3.0 or later | 61 | |
| Toto | Toto | Only for use in ONIX 3.0 or later | 61 | |
| Ugar | Ugaritic | Ancient/historic script | 9 | |
| Vaii | Vai | | 9 | |
| Visp | Visible Speech | Script is not supported by Unicode | 9 | |
| Vith | Vithkuqi | Ancient/historic script. Only for use in ONIX 3.0 or later | 61 | |
| Wara | Warang Citi (Varang Kshiti) | | 13 | |
| Wcho | Wancho | Only for use in ONIX 3.0 or later | 61 | |
| Wole | Woleai | Script is not supported by Unicode | 13 | |
| Xpeo | Old Persian | Ancient/historic script | 9 | |
| Xsux | Cuneiform, Sumero-Akkadian | Ancient/historic script | 9 | |
| Yezi | Yezidi | Ancient/historic script. Only for use in ONIX 3.0 or later | 61 | |
| Yiii | Yi | | 9 | |
| Zanb | Zanabazar Square (Zanabazarin Dörböljin Useg, Xewtee Dörböljin Bicig, Horizontal Square Script) | Only for use in ONIX 3.0 or later | 38 | |
| Zmth | Mathematical notation | Not a script in Unicode | 9 | |
| Zsye | Symbols (Emoji variant) | Not a script in Unicode. Only for use in ONIX 3.0 or later | 38 | |
| Zsym | Symbols | Not a script in Unicode | 9 | |
| Zxxx | Code for unwritten documents | Not a script in Unicode | 9 | |
| Zinh | Code for inherited script | | 13 | |
| Zyyy | Code for undetermined script | | 9 | |
| Zzzz | Code for uncoded script | | 9 | |