No Leon Panetta is not a Jew. He is a Catholic.
Barack Obama named Panetta Director of the Central Intelligence Agency in his administration.
Update: President Obama will nominate CIA Director Leon Panetta as secretary of defense, replacing Robert M. Gates
Panetta was born in Monterey, California, son of Italian immigrants. He was raised in the Monterey area, and attended Catholic schools - St. Carlos Grammar School and the Carmel Mission School.
Panetta commented negatively on 6/27/2010 about the prospects for ending the Afghanistan War