Impassibility (from Latin in-, "not", passibilis, "able to suffer, experience emotion") describes the theological doctrine that God does not experience pain or pleasure from the actions of another being. It has often been seen as a consequence of divine aseity, the idea that God is absolutely independent of any other being, i.e., in no way causally dependent. Being affected (literally made to have a certain emotion, affect) by the state or actions of another would seem to imply causal dependence.

Some theological systems portray God as a being expressive of many (or all) emotions. Other systems, mainly Christianity, Judaism and Islam, portray God as a being that does not experience suffering. However, in Christianity there was an ancient dispute about the impassibility of God (see Nestorianism). Still, it is understood in all Abrahamic religions, including Christianity, that God is "without passions", because God is immutable. So in Christianity, while the created human nature of Christ is mutable and passable, the Godhead is not.