罗素的茶壶（英语：Russell's teapot）或称天体茶壶（英语：Celestial Teapot）、宇宙中的茶壶（英语：Cosmic Teapot），是由哲学家伯特兰·罗素塑造的一个模拟概念，说明举证责任在于提出不可证伪的宣称的人，特别是在宗教的情况。罗素以之驳斥怀疑论在怀疑宗教主张的不可证伪性时具有举证责任的说法。罗素写道，如果他声称，有一个茶壶在地球和火星之间围绕太阳转，而他指望别人相信他的理由是他们不能证明这声明是错，这是荒谬的。罗素的茶壶至今仍然频繁出现在有关神是否存在的讨论中。

Russell's teapot, sometimes called the celestial teapot or cosmic teapot, is an analogy, coined by the philosopher Bertrand Russell (1872–1970) to illustrate that the philosophic burden of proof lies upon a person making scientifically unfalsifiable claims, rather than shifting the burden of disproof to others. Russell specifically applied his analogy in the context of religion. He wrote that if he were to assert, without offering proof, that a teapot orbits the Sun somewhere in space between the Earth and Mars, he could not expect anyone to believe him solely because his assertion could not be proven wrong. Russell's teapot is still invoked in discussions concerning the existence of God, and in various other contexts.