格奈乌斯·庞培（拉丁语：Gnaeus Pompeius Magnus，前106年－前48年），古罗马政治家和军事家。勇悍善战，凶残嗜杀，于前三头同盟中势力最强。

在公元前70年左右，罗马共和国爆发了著名的斯巴达克斯起义，一群以斯巴达克斯为首的奴隶为了争取自由和反对暴政便集体起义。当时克拉苏奉命敉平叛乱，成功消灭起义军主力，又对残余的奴隶劝降。庞培赶到时，见功劳全都落在克拉苏手中，深心不忿，便把五千多名残余奴隶捉来，不分男女老幼，把他们每隔十步便钉在一个十字架上，令他们活活淌血而死。

四年后，庞培率军平定了叙利亚一带，并建为行省，权力到达顶峰。在公元前六零年，他与凯撒与克拉苏秘密结成「三头政治同盟」跟元老院对抗。后和凯撒发生权力之争，爆发内战。他于法萨卢斯战役进行决战中被凯撒击败后，逃往埃及。

Gnaeus Pompeius Magnus (Classical Latin: [ˈgnae̯.ʊs pɔmˈpɛj.jʊs ˈmaŋ.nʊs]; 29 September 106 BC – 29 September 48 BC), usually known in English as Pompey /ˈpɒmpiː/ or Pompey the Great, was a military and political leader of the late Roman Republic. He came from a wealthy Italian provincial background, and his father had been the first to establish the family among the Roman nobility. Pompey's immense success as a general while still very young enabled him to advance directly to his first consulship without meeting the normal requirements for office. His success as a military commander in Sulla's Second Civil War resulted in Sulla bestowing the nickname Magnus, "the Great", upon him. He was consul three times and celebrated three triumphs.