1st century BC), also anglicized as Pompey Trogue,[n 2] was a Gallo-Roman historian from the Celtic Vocontii tribe in Narbonese Gaul who lived during the reign of the emperor Augustus.

[1] His principal work, however, was his 44-volume Philippic Histories and the Origin of the Whole World and the Places of the Earth (Historiae Philippicae et Totius Mundi Origines et Terrae Situs), now lost, which, according to its surviving epitome, had as its principal theme the Macedonian Empire founded by Philip II but functioned as a general history of all of the parts of the world which fell under the control of Alexander the Great and his successors, with extensive ethnographical and geographical digressions.

[2] Pompeius Trogus's idea of history was more exacting than that of Sallust and Livy, whom he criticized for their habit of putting elaborate speeches into the mouths of the characters of whom they wrote.

[5] The original text of the Philippic Histories has been lost and is preserved only in excerpts by other authors (including Vopiscus, Jerome, and Augustine) and in a loose epitome by the later historian Justin.

[6] Justin aimed only to preserve the parts he felt most important or interesting about Pompeius Trogus's work, with the last recorded event being the recovery of Roman standards from the Parthians in 20 BC.