The Early Devonian Yackandandah Granite in northeast Victoria was emplaced along the western boundary of the Omeo Metamorphic Complex. Deformation of probable mid-Devonian age resulted in the formation of a ductile shear zone in the granite, termed the Kiewa shear zone. Displacement of granite boundaries and shear-zone fabrics, including excellently developed S-C fabrics, indicate that the shear zone accommodated ∼7 km of sinistral strike-slip displacement, with no evidence for thrusting as suggested in previous studies. Detailed mapping of fabrics across the shear zone suggest that ∼ 70% of strain was accommodated by the formation of the finite strain foliation (S-planes), with the remaining strain accommodated by discrete slip along C-planes parallel to the shear-zone boundary.