Numerical calculations were carried out on light scattering by randomly oriented cubic particles for several size parameters. The scattering properties were analyzed and compared with those of the equivalent spherical particles. Results show that the differences between the scattering properties of cubic and spherical particles are similar to those between other non-spherical and spherical particles. The results imply the intrinsic symmetry and discontinuity of the normal direction of the particle surface have little effects on the scattering properties.