Functional may refer to:

In mathematics,

In computer science, software engineering

  • Functional design, a paradigm used to simplify the design of hardware and software devices
  • Functional model, a structured representation of functions, activities or processes in systems and software engineering
  • Functional programming, a programming paradigm based on mathematical functions rather than changes in variable states
  • In an ontology, "functional" is a property or relation that can only hold a single value for a given individual

See also