I've seen wonton wrappers in the freezer at the Asian shop on
Agrippas St. in Jerusalem.
Phone ahead to ask if they have what you want in stock: tel 02- 623-0332.
Note: many products they carry are kosher, but not all.
Far Eastern Market ~ 'Mizrach ve'Ma'a'rav'
also called "East & West Food Ltd"
(look for the large sign saying: BALAGAN; yup, that's what it says)
19 HaRav Shmuel Baruch St. / corresponds to Agrippas 149
The website includes contact info for their various outlets in Israel.