Order, ORDER or Orders may refer to:
- A socio-political or established or existing order, e.g. World order, Ancien Regime, Pax Britannica
- Categorization, the process in which ideas and objects are recognized, differentiated, and understood
- Heterarchy, a system of organization wherein the elements have the potential to be ranked a number of different ways
- Hierarchy, an arrangement of items that are represented as being "above", "below", or "at the same level as" one another
- an action or inaction that must be obeyed, mandated by someone in authority