The location and configuration of regional attenuation structures in southern Philippines are implied from the results of the intensity data inversion for the Philippines. The location of low and high attenuation structures determined from Negros to Sulu-Davao areas coincides with the presently known tectonic structures like volcanic arcs and subduction zones. Damped least-squares method was used to determine the attenuation structures over the Philippine intensity data set. The inversion results are correlated with the present seismicity recent petrochemical findings, anomalous intensity distribution and location of trenches and volcanoes. Results from this study strongly indicate the association of low attenuation values with subducted slabs along the known location of trenches in southern Philippines. The configuration of the Philippine Trench is suggested by the concentration of low attenuation values along the east side of central and southern Philippines while on the western side, low attenuation structures are consistent with the location of the Negros Trench. In the vicinity of Negros island in central Philippines, the site where anomalous intensity distribution was previously observed coincided with the location of a noticeable low-attenuation structure determined in this study Moreover, the concentration of high and low attenuation values along the numerous areas in the southern Philippines implies the possible locations of upwelling magmatic body and subducted slab related to both Sulu and Cotabato trenches, respectively. Based on these results, some new insights are presented regarding the configuration of tectonic structures in several portions of the archipelago.