<p>A cradleboard is one of the most common factors that modify the human cranium. Due to the constant positioning of the infant’s occiput (back of the head) against it, the occipital bone becomes somewhat flattened. Due to the slight morphological alterations involved in this type of cranium and the morphological variations associated with ethnic and geographical diversity, it remains challenging to identify and classify such crania. These types of crania have been rarely documented in archaeological excavations conducted in Iran. In this study, 102 CT scans and medical images of contemporary individuals from Khuzestan, southwestern Iran, were analyzed using a morphometric method based on elliptic Fourier analysis to identify cradleboard-induced cranial modification and to specify the osteological details associated with this type of modification. In the statistical population, flattening of the occipital bone resulted in a reduction of the maximum cranial length to as low as 162.2&#xa0;mm in some cases. On the other hand, the maximum cranial breadth increased to as high as 159.8&#xa0;mm in specific specimens. The simultaneous tracking of these two indices focused on the superior view outline of the crania, which was reconstructed using elliptic Fourier analysis. The morphometric method successfully distinguished 23 flattened crania from 79 normal crania. The shorter the cranial length and the greater the cranial breadth, the more distinguishable the flattened specimen was from the Normal group. In addition to revealing the morphological details of cradleboard-induced modification, given the ethnic and geographical diversity and the sample size of this study, the results could help identify similar archaeological specimens.</p>