The present invention is generally directed toward a system for modifying caller identification (Caller ID) information by an outgoing caller on a mobile device. The system includes a storage means for storing Caller ID information prepared by a telecommunications provider, a telecommunications provider Caller ID module configured to transmit the Caller ID information to a receiving party, and a mobile device Caller ID module stored on the mobile device and configured to display the name associated with the Caller ID information on the mobile device. The mobile device Caller ID module is configured to customize the name by the outgoing caller and transmit the customized name to the telecommunications provider Caller ID module. The customized name is then transmitted in place of the telephone account name to the receiving party as part of the Caller ID information.