The Book of Esther, also known in Hebrew as "the Scroll", is a book in the third section of the Hebrew Bible. It is one of the Five Scrolls in the Hebrew Bible and later became part of the Christian Old Testament. The book relates the story of a Jewish woman in Persia, born as Hadassah but known as Esther, who becomes queen of Persia and thwarts a genocide of her people.

The Hebrew Bible or Tanakh, also known in Hebrew as Miqra, is the canonical collection of Hebrew scriptures, comprising the Torah, the Nevi'im, and the Ketuvim. Different branches of Judaism and Samaritanism have maintained different versions of the canon, including the 3rd-century BCE Septuagint text used in Second Temple Judaism, the Syriac Peshitta, the Samaritan Pentateuch, the Dead Sea Scrolls, and most recently the 10th-century medieval Masoretic Text compiled by the Masoretes, currently used in Rabbinic Judaism. The terms "Hebrew Bible" or "Hebrew Canon" are frequently confused with the Masoretic Text; however, this is a medieval version and one of several texts considered authoritative by different types of Judaism throughout history. The current edition of the Masoretic Text is mostly in Biblical Hebrew, with a few passages in Biblical Aramaic.