信息化（英语：Informatization或Informatisation）通常指现代信息技术应用，特别是促成应用对象或领域（比如企业或社会）发生转变的过程。例如，“企业信息化”不仅指在企业中应用信息技术，更重要的是深入应用信息技术所促成或能够达成的业务模式、组织架构乃至经营战略转变。“信息化”用作形容词时，常指对象或领域因信息技术的深入应用所达成的新形态或状态。例如，“信息化社会”指信息技术应用到一定程度后达成的社会形态，它包含许多只有在充分应用现代信息技术才能达成的新特征。

Informatization or informatisation refers to the extent by which a geographical area, an economy or a society is becoming information-based, i.e., increase in size of its information labor force. Usage of the term was inspired by Marc Porat’s categories of ages of human civilization: the Agricultural Age, the Industrial Age and the Information Age (1978). Informatization is to the Information Age what industrialization was to the Industrial Age. It has been stated that: