Languages that use the Arabic script?
I know Arabic, Kurdish and Persian use it but what other languages do?
One of my favorite languges written with Arabic script is Uyghur (ئۇيغۇرچە). Not only does it not have the difficult task of memorizing the vowels in a word (because in Uyghur, ALL vowels are written!), but it also has agglutination and vowel harmony, two of my favorite features of a language.
Urdu is another (pakistan). Good for getting kurdish, that was the one I was thinking when I saw your post! I have some friends from the Kurdish region of Iraq. I bet there is one in the somalia, djibuti, Sudan area; actually I would think quite a few taking into acount linguistic diversity. I also looked it up and 'Dari' (afghanistan) like persian is in the script as well.
Those are the ones I can think of, but looking it up online there are a ton of others listed.
Why do you ask?