Abstract: The last century earthquakes produced more than 1000 km surface rupture on the North Anatolian FaultZone (NAFZ), which is one of the most active deformation belts in the World. Paleoseismic data fromdifferent parts of the NAFZ exposes critical information about the earthquake history of the fault zone. Toresearch paleoseismicity of the Ilıpınar Segment and relationship between the segment and last centuryearthquakes, two paleoseismologic trench studies performed on the Yoncalık basin, where positioned ateastern section of the Ilıpınar segment. We identified two paleo-earthquakes, which correspond to BC8500-6150 and BC 5960-4300 time intervals in the Yoncalık-1 trench. On the other hand the analyses ofstratigraphy and structural features of the Yoncalık-2 trench similarly yield two events, from which theolder happened before BC 6325 and the younger was between BC 6325-2105. Despite of the wide rangeof these intervals, both trench results are coincide within their uncertainty limits. We interpret that eventsin both trenches reflects the same surface ruptures. By the joint analysis of both trenches, we conclude thatthe most recent and penultimate events should have occurred between BC 5960-4300 and BC 8500-6325,respectively. The results from paleoseismology of the Ilıpınar Segment, which constitute the easternmostpart of the NAFZ, indicate that the seismic behaviour of the segment is not in accord with the generalcharacteristic of the NAFZ. The reasons behind the disparity are considered to be related with complexfault geometry in the vicinity of Karlıova triple junction and partitioning of accumulated strain on thesestructures.