Provided are a system and method for providing a document based on a personal network. The document providing system may include a community searching unit to search for a community associated with a first document prepared by a first user, a document registration unit to register the first document in the searched community, and to receive a second document, associated with the first document, registered by a second user included in the community, and a document providing unit to provide the second document associated with the first document. According to embodiments of the present invention, a response that the first user may desire may be provided by receiving a response, registered by the second user included in the community associated with the first user, with respect to the document prepared by the first user.