Constantine G. Lyketsos (born 5 November 1961) is the Elizabeth Plank Althouse Professor in Alzheimer's Disease Research in the Department of Psychiatry and Behavioral Sciences at the Johns Hopkins University, Baltimore, Maryland, United States.[1] He is the founding director of the Richman Family Precision Medicine Center of Excellence in Alzheimer's Disease,[2] and an associate director of the Johns Hopkins Alzheimer's Disease Research Center (ADRC).[3]