>>150764282
No she isn't. She's Catholic. Always has been. However, one of her brothers, Jacob, married a Yehudi and converted to Judaism, the father of Kate Kane. Martha had three brothers, Jacob, Nathan and Philip. Philip is dead in all continuities afaik, Nathan may or may not currently exist (he was the husband of the OG Batwoman, Kathy Kane, Bruce's aunt and mentor to Bette Kane, the original Bat-girl, with a hyphen). But as Martha carried rosary beads and her tombstone has a friggin cross on it, it's fairly obvious she's a Catholic and wasn't Jewish. She therefore never had any Jewishness to pass onto baby Batbrat.
He. Is not. Jewish. Never was.
I'm not sure who in DC is explicitly Yehudi other than Harley, Batwoman and Alice but from all available evidence, Bruce Wayne is not.
>>150764562
I know a Jewish guy named Bruce, actually. Ran into his wife at the supermarket yesterday, in fact, and she tried to Hebrew at me, asking if i shook sticks around a few days ago for some high holy day (only one i know of to shake anything for is Sukkot, which was not recent) despite me telling her multiple times that I never bothered to learn Hebrew. Yes, I'm Jewish. It would be neat if Batman were of the tribe but he just ain't and saying otherwise is dumb. People should stop that.