In Abrahamic religions, the Sabbath () or Shabbat (from Hebrew שַׁבָּת Šabbāṯ) is a day set aside for rest and worship. According to the Book of Exodus, the Sabbath is a day of rest on the seventh day, commanded by God to be kept as a holy day of rest, as God rested from creation. The practice of observing the Sabbath (Shabbat) originates in the biblical commandment "Remember the sabbath day, to keep it holy" (Exodus 20:8–11).

The Sabbath is observed in Judaism, Sabbatarian forms of Christianity (such as many Protestant and Eastern denominations), and Islam. Observances similar to, or descended from, the Sabbath also exist in other religions. The term may be generally used to describe similar weekly observances in other religions.