信息保障（英语：Information assurance，简称：IA）是为了确保信息和有关使用风险的管理实践，而使用的信息或数据的处理，保存，传输，系统与流程。

信息保障是有关信息安全的领域，它主要是保护信息系统和它有关的内容。除了防止骇客和电脑病毒之外，也要具有保密性、完整性、可用性，还有在受到攻击后的可修复性。

Information assurance (IA) is the practice of assuring information and managing risks related to the use, processing, storage, and transmission of information or data and the systems and processes used for those purposes. Information assurance includes protection of the integrity, availability, authenticity, non-repudiation and confidentiality of user data. It uses physical, technical and administrative controls to accomplish these tasks. While focused predominantly on information in digital form, the full range of IA encompasses not only digital but also analog or physical form. These protections apply to data in transit, both physical and electronic forms as well as data at rest in various types of physical and electronic storage facilities. Information assurance as a field has grown from the practice of information security.