No, Tina Fey, the actress famous for her Sarah Palin imitation, is not a Jew.
Fey was born in Upper Darby, Pennsylvania, a suburb of Philadelphia to a Greek American mother and a father of German and Scottish descent.
Tina Fey is married to Jeff Richmond, a composer on SNL. They married in a Greek Orthodox ceremony on June 3, 2001. They have a daughter, Alice Zenobia Richmond who was born on September 10, 2005.