It is spoken mostly by Persian Jews living in Shiraz and surrounding areas of the Fars province in Iran.
Additionally, Judeo-Shirazi marks person in the past transitive using a proclitic, which otherwise functions as an oblique pronominal suffix.
Other grammatical features of note:[4] Judeo-Shirazi articulates sibilants (s, z) as intra-dental (θ, ð).
The systematic replacement of /s z/ by /θ ð/ in Judeo-Shirazi may be a result of two processes: the post-vocalic fricativatization found in other Fars dialects, like Davāni, and the original phoneme /θ/ stemming from proto-Shirazi.
Other phonological features contribute to evidence of its descendance from proto-Shirazi and other old Fars dialects: Additional features similar to Fars dialects include the fronting of back vowels and final -a and -e.[4] Judeo-Shirazi is now Moribund with only 200 speakers as of 2023.