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The Babar Selaru region is located on Timor-Tanimbar Trough in the Southern Banda Outer Arc lies between passive margin in the south and active margin in the north of the Australian plate. The northern active margin comprises of thrust imbricated sequence formed by the collision of Australian and Sunda plates with oblique convergent deformation. Numerous studies have been done in the adjacent Bonaparte and Arafura basins to reveal geologic histories. However, structural evolution of Babar Selaru region, especially evolution after Neogene in the region is not well known. This paper presents overview of the findings of the structural evolution history in the region using regional two-dimensional (2D) seismic vintages and recently acquired high quality Three-dimensional (3D) broadband seismic data in the Babar Selaru block. Three significant tectonic events occurred during Mesozoic and Cenozoic in the region. N-S trend extension occurred during Jurassic and Early Cretaceous which was accompanied by the opening of the Tethys Ocean. This sequence was overlain by the Late Cretaceous and Paleogene sequences in thermal subsidence phase. These sequences indicate depocentre shift from south to north during Cretaceous and Paleogene in the region. Subsequently deepening of Timor Trough and thrusting initiated in the region probably after Pliocene which is characterized by the onlapping sequence on Late Miocene along the Timor Trough and hickness change of the after Pliocene sediment between the Timor Trough and northern area. Currently thrusts and north dipping normal fault are dominant in the north and south of the Trough respectively, pre-existing W-E trend normal faults under thrusts reactivated simultaneously with Thrusting. In addition, NNE-SSW trend west dipping normal faults coincidentally formed with thrusting in the region. A sequence of these events in the region is resulted from oblique collision of the Australian and Sunda plates after Miocene, subsequent flexural bending of the Australian plate and probably the loading of the thrust sequence in the north. Babar Selaru region is interpreted to be a region where recorded a complicated evolution history. Keywords: Banda Arc, Thrust, Detachment, Collision, Timor-Tanimbar Trough