Abrahamic religions are religions which share the patriarch Abraham in their religious lineage, although he plays different roles in different Abrahamic religions. Islam, Christianity, and Judaism are all considered to be Abrahamic religions, as Abraham appears in the religious texts of all of these faiths, and the Druze, Bahai, Samaritans, and others are sometimes considered to be Abrahamic religions as well. All told, over half of the people in the world identify themselves as members of an Abrahamic religion.

In addition to sharing the figure of Abraham, numerous other figures can be found in the tradition of all of the Abrahamic religions, such as Noah, and these religions share several common traits, as well. All Abrahamic religions are monotheist, believing in one god, and they have Semitic origins. In the case of Judaism and Islam, Abraham is viewed as a literal father of the religion, in the direct lineage of various prophets and other important religious figures, and in the case of Christianity, Abraham plays the role of a spiritual father, because Christianity is derived from Judaism.

Abraham's story is well documented in numerous religious texts, and in his long life, he participated in a number of events of religious and historical importance in the eyes of religious believers. He is perhaps most famous for making a covenant with God which allowed him to have many children with his wife Sarah long after the two were past the age of childbearing, and these children are considered to be the ancestors of the Semitic people.

In Judaism, Abraham is recognized as the “father of many,” and his covenant with God is an important story in the Jewish tradition. In Islam, Abraham is considered to be a prophet, and his son Ishmael is in the lineage of the prophet Muhammad (Peace Be Upon Him). For Christians, Abraham is important because he is the father of the people of Israel, and therefore a forbear of Christ. As a result, he is a crucial figure in all of these Abrahamic religions, along with other religions which use scripture derived form the Abrahamic religions.

There is some debate as to which religions should be classified as Abrahamic religions, especially among smaller religions which may be inspired by such religions, but may not view Abraham in the same way. The other major category of religious belief is the Eastern Religions, which include faiths like Buddhism, Hinduism, and so forth.