Provided is an apparatus and method for providing inter-piconet data communication in a wireless personal area network. The apparatus includes a piconet association unit, a superframe synchronization unit, a superframe synchronization unit, a DSPS (device synchronized power save) set creation unit, a piconet information announcement unit, a transfer data storage unit, and a data transfer unit. The piconet association unit confirms that a plurality of piconets are located on different channels, and performs a piconet association process. The superframe synchronization unit performs superframe synchronization between piconets. The DSPS set creation unit creates a DSPS set or joining an existing DSPS set. The piconet information announcement unit provides a device with information about another data-transferable piconet and devices belonging to the piconet. The transfer data storage unit receives and stores data requested to be transferred within a superframe. The data transfer unit transmits the stored data to the destination piconet.