Isaac Newton was not Jewish. Clearly. However, there are some connections: he knew Hebrew, was very well versed in Jewish history, and considered Christianity a derivative of Judaism.
So, we'll just slap a verdict here and go back to writing about Duffman...
One minor problem. Should we say "Not a Jew", or "Sadly, Not a Jew"? Yes, questions like these keep us awake at night.
On one hand, gravity, laws of motion, the reflecting telescope, one of the smartest men ever, etc, etc, etc. Sounds like a lock for "Sadly".
On the other hand, calculus. Thanks for that invention, Sir Isaac. We were forced to take three semesters of calculus in college. Those long nights struggling with double and triple integrals are not easily forgotten. Or forgiven.
And when, in our last calculus class ever, the professor told us that everything we'd worked so hard to learn was not only essentially useless but could be better done by computers, well...