Yezidi (also spelled Yazidi) is a liturgical script used by approximately 100,000 followers of the Yezidi religion, mainly in Kurdistan but also in Iraq, Syria, Turkey and the Caucasus. This religion is a complex combination of local Kurdish beliefs and Islamic Sufi doctrine. Religious documents can be written in Kurdish or in Arabic; the Yezidi script is used for both languages.
Yezidi is an abjad; vowels are generally not written. However, it is unclear whether it constitutes a script proper, or if it is a cipher. It is thought to be based in part on the Arabic script and partly on the Latin script.
This script is not currently recognized by the ISO 15924 standard, but is included in ScriptSource for research purposes. If you have any information on this script, please add the information to this site. Your contributions can be a great help in refining and expanding the ISO 15924 standard. The Script Encoding Initiative is working to support the inclusion of this script in the standard, and contributions here will support their efforts.