The Jewish War is a history book by Flavius Josephus about Jewish–Roman wars. Divided into seven books, it opens with a summary of Jewish history from the capture of Jerusalem by the Seleucid ruler Antiochus IV Epiphanes in 164 BC to the first stages of the First Jewish–Roman War (Book I and II). The next five books detail the unfolding of the war, under Roman generals Vespasian and Titus, to the death of the last Sicarii.

Titus Flavius Josephus was a first-century Romano-Jewish scholar, historian and hagiographer, who was born in Jerusalem—then part of Roman Judea—to a father of priestly descent and a mother who claimed royal ancestry. He initially fought against the Romans during the First Jewish–Roman War as head of Jewish forces in Galilee, until surrendering in 67 CE to Roman forces led by Vespasian after the six-week siege of Jotapata. After Vespasian became Emperor in 69 CE, he granted Josephus his freedom, at which time Josephus assumed the emperor's family name of Flavius. He fully defected to the Roman side and was granted Roman citizenship. Josephus recorded Jewish history, with special emphasis on the first century CE and the First Jewish–Roman War, including the Siege of Masada. His most important works were The Jewish War (c. 75) and Antiquities of the Jews (c. 94).