The following writing scripts have not been allocated an ISO 15924 code.
APL Avoiuli script Aztec script Badaga Bagam Balti A Balti B Bété Bhujimol script Borama Bronze scripts Brusha Byblos Chalukya Chola Coorgi–Cox alphabet Dhimal Eebee Hmog Epi Olmec Ersu Shaba script Eskaya Fula alphabets Gabelsberger shorthand Gangga Melayu Gregg shorthand Great Lakes Algonquian syllabics Gugyeol Gupta script Hamnosys Iban iConji IsiBheqe soHlamvu Kadamba Kaddare Kaida Karani Kherinci Khamti Khati baburi Khitan large script Khom script (Ong Kommadam) Khom Thai script Khotanese Kpelle Kulitan Lampung Laṇḍā scripts Leke Linear Elamite Lontara Luo Mangar akkha Mandombe Marchung Masaba Mi'kmaw hieroglyphs Minangkabau Mixtec Mwangwego script Naasioi Nasu Nisu Northern paleohispanic Numidian Nwagu Aneke script Old Minahasa Olmec Oracle bone script Pallava Pau Cin Hau logographs Pitman shorthand Proto elamit Proto sinaitic Pungchen Pungchung Pyu Quikscript Raina kama Ranajana Romanian transitional alphabet Rongo rongo Salifou hausa Sani yi Satavahana Seal script Shankha Shuishui logograms Sirmauri Sitelen Pona Southern Paleohospanic Stokoe Szarvas inscription Tani Teeline Shorthand Teotihuacan Tikamuli Tironian notes Tocharian script Unifon Vtafi Vtai yo Vtangsa Vatteluttu Veso Bey Western Cham Woleai Zapotec Zou Some fictional constructed writing systems
See also
ISO 15924 List of ISO 15924 codes by letter code