Technical Abstract: Rice is one of the leading food crops in the world. At harvest, rice normally has higher moisture content than the moisture content considered safe for its storage, which creates the necessity for a drying process before its storage. In addition to drying, moisture movement within the rice kernels also occurs when they are exposed to relatively humid or drier environments that can happen when they are in field, during handling and transport or during storage. Moisture gradients produced in the rice kernels during these moisture transport processes cause the kernels to fissure and thus reduce the economic value. Information presented in this chapter will give clear understanding of different approaches to model moisture transport processes in rice and enable scientists and professionals to apply these modeling approaches in improving the post harvest operations.