Yield stress anisotropy in Al-Mg alloy sheets was studied from viewpoints of both texture and dislocation cell arrangements. The specimens were heavily cold rolled and annealed for recovery. It is revealed that anisotropy of dislocation cell arrangements has a significant effect on the yield stress anisotropy, whereas crystallographic texture has little effect on it. Behaviour of the anisotropy change with annealing is strongly affected by the type of initial dislocation arrangements introduced by cold rolling. In the type of specimens with inhomogeneously deformed structures such as shear bands or deformation zones developed around coarse particles, both DeltaYS(0degrees-45degrees) and DeltaYS(90degrees-45degrees) decreased with elevating annealing temperature. On the other hand, in the type of specimens with less inhomogeneously deformed structures, DeltaYS(0degrees-45degrees) decreased with the annealing. However, DeltaYS(90degrees-45degrees) exhibited a tendency to increase.