Abstract: An apparatus and method for allocating resources in multi-carrier wireless telecommunication system is provided. The apparatus comprises a scheduler for configuring a multicast channel by combining sub-carriers according to a multicast preference for each sub-carrier, and controlling resource allocation according to the configured multicast channel, and a sub-carrier mapper for inputting unicast data and multicast data to be transmitted, allocating the multicast data to the sub-carriers configuring the multicast channel under the control of the scheduler, and outputting the unicast data by allocating the unicast data to sub-carriers excluding sub-carriers allocated to the multicast channel.