Nonlocal may refer to:
Action at a distance, direct interaction of physical objects that are not in proximity Quantum nonlocality, nonlocal phenomena in quantum mechanics Conjugated system (or nonlocalized bond), in chemistry, a system of connected p-orbitals with delocalized electrons in compounds with alternating single and multiple bonds, which in general may lower the overall energy of the molecule and increase stability Nonlocal goto, an abstract representation of the control state of a computer program Nonlocal Lagrangian, in field theory, a type of functional which contains terms which are nonlocal in the fields i.e. which are not polynomials or functions of the fields or their derivatives evaluated at a single point in the space of dynamical parameters (e.g. space-time) Other nonlocal relationships in physics, such as Pippard's nonlocal generalisation of the Londons' equations for superconductivity Non-local means, an algorithm in image processing for image denoising Nonlocal operator, which maps functions on a topological space to functions, in such a way that the value of the output function at a given point cannot be determined solely from the values of the input function in any neighbourhood of any point Non-local variable, in programming language theory, a variable that is not defined in the local scope nonlocal, a statement in Python 3 that causes identifiers to refer to their bindings in outer enclosing scopes