Hossein Vahidi (PharmD, PhD) is a Professor and head of the Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Iran. He is currently head of the School of Pharmacy and Director-in-Charge of the Iranian Journal of Pharmaceutical Research (IJPR). His research interests lie in the area of bioprocessing and fermentation of microorganisms for the production of bioactive compounds, optimization of fermentation, and growth of industrial microorganisms.