The drying stage is important in biotechnological and chemical processes because it allows the pretreatment of feedstocks with different moisture contents for their physical or chemical transformation. Drying also enables the post-treatment of products for their final presentation and packaging, thus having wide application in the food, agro-industrial, pharmaceutical, and chemical industries. Current Drying Processes presents recent advances in the development of drying operations through the presentation of chapters dealing with theoretical and experimental aspects of different technologies, namely solar, convective, fluidized, and ultrasonic drying, for organic and inorganic materials.