An information notification system includes apparatuses and first server. The apparatuses include a first device. Each of at least one of the apparatuses includes a sensor unit that senses whether any person is present and generates a presence-absence signal including person presence-absence information. A first device includes a generator that generates a notification signal including notification information that is to be provided to the user. A first server includes an information acquirer that acquires the person presence-absence information, and a presentation controller that determines a presumed position and causes a second device to present the notification information, and the second device being one of one or more apparatuses that are capable of presenting the notification information to the person who is in the presumed position among the apparatuses. A presentation controller changes a form of presentation in accordance with presentation setting information that is information about the person.