The lists of Nobel Prize winners here include only Jews by the strict definition of Halacha (interpretation of the laws of the Hebrew Scriptures). This requires being born to a Jewish mother or formal conversion to Judaism. The identification of being Jewish is similar to nationality and is independent of personal beliefs. See explanations on the question of "Who is a Jew?"
The resources used for identification include the autobiographies of the laureates, Encyclopedia Judaica, historical documents, and personal correspondence with some of the laureates themselves.
• Bereshit (Genesis) 12:3: "...and all peoples on earth will be blessed through you."