An apparatus and a method manage a telephone number in a terminal, which can separately manage telephone numbers, a call to each of which an attempt to originate has been made and to each of which the call has failed to be connected, and then enable a convenient attempt to re-originate a call to the telephone number. The apparatus includes: a memory including a temporary list which stores a non-connecting telephone number, to which a call has been originated and has failed to be connected; and a controller for performing a control operation so as to store a particular telephone number in the temporary list as the non-connecting telephone number, when an attempt to originate a call to the particular telephone number is made and the call fails to be connected to the particular telephone number.