Scriptorium, literally "a place for writing", is commonly used to refer to a room in medieval European monasteries devoted to the copying of manuscripts by monastic scribes. Written accounts, surviving buildings, and archaeological excavations all show, however, that contrary to popular belief^{[citation needed]} such rooms rarely existed: most monastic writing was done in cubicle-like recesses in the cloister, or in the monks' own cells. References in modern scholarly writings to 'scriptoria' more usually refer to the collective written output of a monastery, rather than to a physical room.

A scriptorium was a necessary adjunct to a library; wherever there was a library it can ordinarily be assumed that there was a scriptorium. Scriptoria in the conventional sense of a room set aside for the purpose probably only existed for limited periods of time, when an institution or individual wanted a large number of texts copied to stock a library; once the library was stocked, there was no further need for a designated room. By the start of the 13th century secular copy-shops developed; professional scribes may have had special rooms set aside for writing, but in most cases they probably simply had a writing-desk next to a window in their own house.