Three body may refer to:
;Science
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Three-body problem
In physics and classical mechanics, the three-body problem is the problem of taking the initial positions and velocities (or momenta) of three point masses and solving for their subsequent motion according to Newton's laws of motion and Newton's ...
, a problem in physics and classical mechanics
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Euler's three-body problem
In physics and astronomy, Euler's three-body problem is to solve for the motion of a particle that is acted upon by the gravitational field of two other point masses that are fixed in space. This problem is exactly solvable, and yields an approxim ...
, a problem in physics and astronomy
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Three-body force
A three-body force is a force that does not exist in a system of two objects but appears in a three-body system. In general, if the behaviour of a system of more than two objects cannot be described by the two-body interactions between all possibl ...
, a force appearing in a three-body system
;Science fiction
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''Three Body'' (science fiction), a science fiction novel trilogy by Liu Cixin
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''Three Body'' (film), an upcoming film based on the first novel, produced by Yoozoo Film, established by Lin Qi in 2014.
;Eastern religions
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Three Bodies Doctrine, doctrine in Vedanta: the gross body, the subtle body, and the causal body
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Trikaya
The Trikāya doctrine ( sa, त्रिकाय, lit. "three bodies"; , ) is a Mahayana Buddhist teaching on both the nature of reality and the nature of Buddhahood. The doctrine says that Buddha has three ''kāyas'' or ''bodies'', the ''Dharma ...
, the Buddhist ''Nirmāṇakāya'' or "created body", ''Sambhogakāya'' or "body of bliss", and the ''Dharmakāya'' or "Truth body"
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