A new 3D tectonic model is obtained for the Kinneret Basin, an extensional structure within the Dead Sea Fault System. Body waves from ~1900 earthquakes (1.0 ≤ MW ≤ 4.5) are inverted to a 3D local seismic velocity model, combined with bathymetry, seismic reflection profiles, and borehole data to identify basinal structure and dominant faults. Low-velocity zones and relatively high VP/VS values correspond to thick sedimentary layers that dominate the deeper basin structure (~ 5 km depth) and are confined between two longitudinal faults. Integration of 2D seismic reflection profiles with our tomography results highlights additional normal faults west of the deeper Western Longitudinal Fault (WLF). These observations suggest that the basin evolved from a symmetric pull-apart structure controlled by the two longitudinal faults to its present asymmetric configuration dominated by the shear along the East Longitudinal Fault (ELF) and localized extension along the western margin.