Processing typically describes the act of taking something through an established and usually routine set of procedures to convert it from one form to another, as a manufacturing procedure, such as processing milk into cheese. Processing can also refer to administrative procedure such as processing paperwork to grant a mortgage loan.

Processing can refer to:

• Data processing
• Food processing
• Geometry processing
• Information processing
• Process industries
• Processing (Chinese materia medica), the technique of altering the properties of crude drugs by such means as roasting, honey frying, wine frying, earth frying, vinegar frying, calcining, or other means
• Processing (programming language)
• Signal processing
• Word processing