Provided are apparatus and method for controlling service mobility. The apparatus includes a subscriber information manager configured to obtain subscriber information from a network core, map the obtained subscriber information with terminals belonging to each subscriber, and store the mapping result, a target terminal information manager configured to obtain information on an available state of terminals available to a subscriber from the obtained subscriber information, a service information manager configured to obtain, maintain, and manage information on available services of a subscriber, information on currently running services, terminal-available service mapping information of each subscriber, currently running terminal-service mapping information, and Service-session mapping information, and a session transfer unit configured to perform a session mobility control procedure for a selected session by incorporating with the network core.