Nissim Mordechai Ze'ev (Hebrew: נסים מרדכי זאב; born 9 September 1951) is an Israeli politician.

In 1979, he returned to Israel to establish the "Nevat Israel" Institutes for Sephardic Jewish girls - ranging from kindergarten, to elementary schools, to high schools, and to a teaching seminary to train teachers and kindergarten teachers.

In the summer of 1983, he established a non-profit organization called the "Sephardic Association of Torah Observers", and served as its chairman.

To advance this cause, he established the Knesset Caucus for Israel, Judaism, and Global Ethics, and presented legislative proposals to prevent the evacuation of settlers against their will.

In June 2007, he compared homosexuals to drug addicts, and suggested that rehabilitation centers be set up for them throughout Israel, saying: "The government should initiate this; these people are unfortunate, and we must keep an eye on them to assist them...

He also claimed that gay people must be made aware of "how their lifestyle is destroying our existence", and that MKs "propose numerous bills to help barren women become more fertile, but on the other hand, we allow this immorality".