色诺芬尼（Ξενοφάνης，约公元前570年－前470年），古希腊哲学家、诗人、历史学家社会和宗教评论家。我们对他的观点的了解来自其残存的诗，所有片段都是被后世的希腊作家作为引文而流传下来。他的诗批评和讽刺广泛的思想，包括对万神殿中拟人神的信仰和希腊人对运动的崇尚。

色诺芬尼拒绝像标准的相信许多神，而且认为神的思想和外形像人的人一样。他一段经典的嘲笑名句，如果牛能想象神，那它们的神一定像牛。因为他对一神论观念的发展，认为它是抽象的、普遍的、不变的、固定且总是留在记忆里，色诺芬尼常被视为西方哲学的宗教信仰方面第一个一神教信徒。

Xenophanes of Colophon (/zəˈnɒfəniːz/; Ancient Greek: Ξενοφάνης ὁ Κολοφώνιος [ksenopʰánɛːs ho kolopʰɔ̌ːnios]; c. 570 – c. 475 BC) was a Greek philosopher, theologian, poet, and social and religious critic. Xenophanes lived a life of travel, having left Ionia at the age of 25 and continuing to travel throughout the Greek world for another 67 years. Some scholars say he lived in exile in Sicily. Knowledge of his views comes from fragments of his poetry, surviving as quotations by later Greek writers. To judge from these, his elegiac and iambic poetry criticized and satirized a wide range of ideas, including Homer and Hesiod, the belief in the pantheon of anthropomorphic gods and the Greeks' veneration of athleticism. He is the earliest Greek poet who claims explicitly to be writing for future generations, creating "fame that will reach all of Greece, and never die while the Greek kind of songs survives."