A wireless communication apparatus includes a communication controller and an identification information setup portion. The communication controller establishes first communication, namely, communication with a first wireless communication apparatus having identification information already set and receives first information, namely, information to settle the identification information to be set, from the first wireless communication apparatus. The identification information setup portion sets the identification information for the wireless communication apparatus based on the first information. After setting the identification information, the communication controller establishes second communication, namely, communication with a second wireless communication apparatus having identification information not set yet, and transmits second information, namely, information to settle the identification information to be set for the second wireless communication apparatus, to the second wireless communication apparatus. The communication controller transmits the second information to one second wireless communication apparatus and subsequently does not transmit the second information.