The 2023 Türkiye earthquake, consisting of two major shocks (Mw 7.8 and Mw 7.6) on February 6, 2023, caused significant damage and loss of life in southern Turkey. This study uses Sentinel-2 satellite imagery to map the high-resolution coseismic surface rupture and estimate the rupture width, total offset, and diffuse deformation. The ruptures extend over 310 km and 140 km for the Mw 7.8 and Mw 7.6 events, respectively, with maximum offsets of 7.5 ± 0.8 m and 8.7 ± 0.8 m near the epicenters. The mapping is validated with ground-based offset measurements. The study identifies fault segmentation and diffuse deformation, suggesting potential supershear rupture in certain segments. The findings provide new insights into seismic hazard assessment and the complex tectonic context of the region.The 2023 Türkiye earthquake, consisting of two major shocks (Mw 7.8 and Mw 7.6) on February 6, 2023, caused significant damage and loss of life in southern Turkey. This study uses Sentinel-2 satellite imagery to map the high-resolution coseismic surface rupture and estimate the rupture width, total offset, and diffuse deformation. The ruptures extend over 310 km and 140 km for the Mw 7.8 and Mw 7.6 events, respectively, with maximum offsets of 7.5 ± 0.8 m and 8.7 ± 0.8 m near the epicenters. The mapping is validated with ground-based offset measurements. The study identifies fault segmentation and diffuse deformation, suggesting potential supershear rupture in certain segments. The findings provide new insights into seismic hazard assessment and the complex tectonic context of the region.