The Gospel According to Mark (Greek: κατὰ Μᾶρκον εὐαγγέλιον, τὸ εὐαγγέλιον κατὰ Μᾶρκον, to euangelion kata Markon), commonly shortened to the Gospel of Mark or simply Mark, is the second book of the New Testament. This canonical account of the life of Jesus of Nazareth is one of the three synoptic gospels. It was thought to be an epitome, which accounts for its place as the second gospel in the Bible. However, most contemporary scholars now regard it as the earliest of the canonical gospels (c 70). That Mark was used as a source for the other synoptic gospels Gospel of Matthew and Gospel of Luke is widely held by many, although not all, New Testament scholars.

The Gospel of Mark narrates the Ministry of Jesus from his baptism by John the Baptist to his death and resurrection. It focuses particularly on the last week of his life (chapters 11–16) in Jerusalem. Its swift narrative portrays Jesus as a heroic man of action, an exorcist, healer and miracle worker. An important theme of Mark is the Messianic Secret. Jesus silences the demoniacs he heals, tries unsuccessfully to keep his messianic identity secret, and conceals his message with parables. Meanwhile, the disciples fail to understand both the implication of the miracles of Jesus and the meaning of the things he predicts about his arrest, death and resurrection. Most scholars believe that the original text of the gospel ends at Mark 16:8 with the discovery of Jesus' empty tomb and that the following account of his resurrection appearances is a later addition.