Organizational memory (OM, sometimes called institutional or corporate memory) is the accumulated body of data, information, and knowledge created in the course of an organization's existence. The concept of organizational memory includes the ideas of components knowledge acquisition, knowledge processing or maintenance, and knowledge usage like search and retrieval. Falling under the wider disciplinary umbrella of knowledge management, it has two repositories: an organization's archives, including its electronic data bases; and individuals' memories.

Organizational memory can only be applied if it can be accessed. To make use of it, organizations must have effective retrieval systems for their archives and members with good memory recall. Its importance to an organization depends upon how well individuals can apply it, a discipline known as experiential learning or evidence-based practice. In the case of individuals, organizational memory's accuracy is invariably compromised by the inherent limitations of human memory. Individuals' reluctance to admit to mistakes and difficulties compounds the problem. The actively encouraged flexible labor market has imposed an Alzheimer's-like corporate amnesia on organizations that creates an inability to benefit from hindsight.