The Makran subduction zone is a result of the northward subduction of the Arabian plate beneath the Eurasian plate. It is located in a complicated tectonic setting. From seismicity point of view, the east and west Makran have two different characteristics; the latest being considered as seismically more active. But in general, the seismicity in the region compared to other subduction zones in the world and at the same time with respect to its low surrounding. These three active seismic crustal scale refraction/wide angle reflection data together with large explosions, the necessary data has been acquired. In this paper using the newly acquired seismic data, a better estimation of the plate geometry of the western part of the Makran subduction zone (Iran), the crustal structure and hence the seismo-genic and tsunami-genic potential of this region were discussed.