There is described a control apparatus, which makes it possible to improve maneuverability of operations for setting the sender information in the facsimile system in which a facsimile apparatus and the control apparatus are coupled to each other through a network, so that the control apparatus instructs the facsimile apparatus to conduct a facsimile transmitting operation. The control apparatus includes: a sender information acquiring section to acquire from the facsimile apparatus at least one set of sender information, each of which is information about a sender and is registered in the facsimile apparatus in advance; and a sender information selecting section to allow a user to select one of the sender information from the acquired sender information displayed on a display section.