Yes. Mayor Michael Bloomberg is a Jew. He was born to a Jewish family of Russian and Polish descent in Boston on February 14, 1942.
Bloomberg is also incredibly wealthy. Forbes reports his net worth at $20 billion as of 2008, ranking him eighth among American billionaires, up from 34th in its list of 400 Richest Americans in September 2006 and 142nd in the March 2007 List of the World's Billionaires.
Bloomberg also has shown his unbelievable chutzpah in announcing this week that he is seeking to change the law so that he can be elected to a third term as mayor of New York City.