Modern Standard Arabic:
من أین أنت؟
Min ayna ant(i/a) (Final '-i'=feminine, Final '-a'=masculine)
From where you?
Egyptian & Levantine Arabic:
أنت منین؟
ent(i/a) mneen?
You whence?
Maghrebi Arabic:
منین انت
menin nti (Depending on the dialect, you may not have to distinguish between addressees based on grammatical gender.)
Whence you?
Gulf Arabic:
انت من وین؟
inti/a min wain
You from where?