Abstract: A data receiving apparatus receives data into which a stuff pulse for frequency synchronization is inserted. The data receiving apparatus is provided with a frame alignment information detecting unit for detecting frame alignment information to establish a frame alignment from the received data, a stuff pulse insertion position detecting circuit for detecting the insertion position of the stuff pulse which has been inserted into the received data, and a frame pattern rearranging circuit for rearranging the frame pattern of the received data so that the insertion position of the stuff pulse is fixed at a predetermined position, on the basis of the detection output of the frame alignment information detecting unit and the detection output of the stuff pulse insertion position detecting circuit.