No, Tina Fey is not a Jew. Fey is a comedian, writer and actress known for her roles on Saturday Night Live, Mean Girls and 30 Rock.
Fey was born in Upper Darby, Pennsylvania, a township just west of Philadelphia. Her mother, Zenobia "Jeanne" is a brokerage employee of Greek descent and her father, Donald Fey, is a university grant-proposal writer of half German and half Scottish descent.
Fey performed with The Second City after graduating from the University of Virginia. While there she sent scripts to SNL and was hired as a writer. She began performing on the show in 2000 and left in 2006, when she began to develop and act in her sitcom, 30 Rock.