It is with great sadness we announce the passing of Richard P. Allen, PhD. Dr. Allen founded and co-directed the Johns Hopkins Sleep Disorders Center and the Hopkins’ center for the study of the restless legs syndrome (RLS). He also served as chair of the medical advisory board for the Restless Legs Syndrome Foundation, chair of the International Restless Legs Syndrome Study Group and President of the World Association of Sleep Medicine (now World Sleep Society). He had a central role in defining the current diagnostic standards for RLS and also the new standards for iron treatments of RLS and scoring periodic limb movements (PLM). He has published over 300 peer-reviewed articles on sleep-disorders including pioneering work on RLS augmentation, dopamine and IV iron RLS treatments and the iron-dopamine, iron-glutamate and brain iron deficiency abnormalities of RLS. Dr. Allen was the 2020 SRS Outstanding Scientific Achievement Award winner.