Decomposition method is a generic term for solutions of various problems and design of algorithms in which the basic idea is to decompose the problem into subproblems. The term may specifically refer to:

Decomposition method (constraint satisfaction) in constraint satisfaction Decomposition method (multidisciplinary design optimization) in multidisciplinary design optimization Decomposition method (queueing theory), in queueing network analysis Adomian decomposition method, a non-numerical method for solving nonlinear differential equations Domain decomposition methods in mathematics, numerical analysis, and numerical partial differential equations Cholesky decomposition method

See also Decomposition (disambiguation)