Extraphysics, also nonphysics, is a hypothesis and philosophical stance that states that there are more things beyond matter and physics and those things interact with matter and physics somehow, where those things as called as extraphysics or nonphysics. Extraphysics is well known by the philosophy of extraphysicalism and by the hypothesis of extraphysical mechanics. Extraphysics isn't considered as a scientific field (on the sense of natural sciences) and it's considered as a philosophical field, an open field and as a field of spiritual sciences and extranatural sciences, having its own field called extraphysical sciences, and both three aren't considered as parts of natural sciences and hard sciences but are still considered as a valid field of study and research. Extraphysics is also an important component of the philosophies of extraphysicalism, extramaterialism and extranaturalism.

Extraphysics is a branch of physics that deals with everything that is not part of quantum physics neither classical physics. Extraphysics is usually used to refer to extraphysical mechanics and its areas inside physics.

Extraphysicalism, also Metaphysicalism, is a philosophical stance that holds that reality is extraphysical and that all physical and material is dependent of the extraphysical and extramaterial and vice-versa. Extraphysicalism also supports that there are extraphysical components in reality and in how reality works but it's hard or even impossible to be physically determined or proved. Extraphysicalism also states that there are things and life beyond the spacetime as well as the existence of extraphysical life, extraphysical worlds and extraphysical dimensions.

Extraphysical mechanics is a fundamental theory and theoretical framework in physics that provides a description of the physical properties of nature at extraphysical scale. It is the foundation of all extraphysical theory including extraphysical chemistry, extraphysical astronomy, theoretical extraphysics, extraphysical computing, extraphysical technology, and extraphysical biology.

Extraphysical Superposition is a fundamental principle of extraphysical mechanics. It states that any two (or more) extraphysical states, objects and bodies can be added togehter ("superposed") and the result will be another valid extraphysical state; and conversely, that every extraphysical state can be represented as a sum of two or more other distinct states.

Extraphysical form is the name of a power and form of existence that is about getting non-material form and reaching extraphysical existence. There are two main extraphysical forms. Materialized extraphysical form and non-materialized extraphysical form.

Extraphysical Materialism is a materialist current that advocates that extraphysics are the base of the whole universe and of the whole existence. Extraphysical materialism advocates quantum mechanics are a form of extraphysics, where quantum materialism is actually part of extraphysical materialism. Extraphysical materialism advocates it is necessary massive investments and studies on quantum mechanics and extraphysical mechanics for prove if quantum materialism and extraphysical materialism are correct or not or are falseable. Extraphysical materialism also advocates extraphysics can influence the physical level such as quantum mechanics can influence the macro level.

Aetheric Extraphysics is a branch of extraphysics and a hypothesis on extraphysics where the Aether is actually an extraphysical substance that exists at extraphysical level, and that supposedly is one of the susbtances that separates the physical of the extraphysical and Aether cannot be detected by any physical means but its interaction with the physics can be completely explained by physical ways, according to Aether Extraphysics, aether is more a substance that separated the physical from the extraphysical and it's considered the essential separation between the physical and extraphysical.

Neutral Extraphysicalism is an extraphysicalist philosophy, derived from extraphysical monism, where there’s no dichotomy between physics and extraphysics and both are the same thing, and believing the fundamental nature of reality to be neither extraphysical nor physical; in other words it is "neutral". Neutral Extraphysicalism believes that both extraphysical and physical are made by a neutral substance that is part of the whole physics, extraphysics and existence. Neutral Extraphysicalism is often considered the most common position of extraphysical monism, being classical extraphysical monism supporter that extraphysics and physics are equal and made of the same substance while neutral extraphysicalism supports that the neutral substance that composes physics and extraphysics is what makes physics and extraphysics being equal to each other.