Structured writing or "structured writing" is a form of technical writing that uses and creates structured documents.

The term was coined by Robert E. Horn. Structured writing became a central part of their information mapping method for analyzing, organizing, and displaying knowledge in print and in the new online presentation of text and graphics.

Horn and his colleagues identified dozens of common documentation types and then analyzed them into structural components called information blocks. They identified more than 200 common block types. These were gathered into information types using information maps.

The seven most common types of information were concept, procedure, process, principle, fact, structure, and classification.

Structured writing has been developed to address common problems in complex writing:[1]​.

The seven most common information types identified by Horn and his colleagues are loosely related to the three basic information types in the Darwin Information Typing Architecture (DITA): concept, task, and reference. The information mapping procedure is a set of steps for a person. A process is a set of steps for a system. Both are similar to DITA tasks. DITA topics are assembled into documents using DITA maps.