Naihua Duan (; born 31 October 1949) is a Taiwanese biostatistician specializing in mental health services and policy research at Columbia University. Duan is a professor of biostatistics (in psychiatry) with tenure in the Departments of Psychiatry and Biostatistics at Columbia University Medical Center, and a senior research scientist at NYSPI.
Duan received a B.S. in mathematics from National Taiwan University, an M.A. in mathematical statistics from Columbia University, and a Ph.D. in statistics from Stanford University.
He is an elected fellow of the American Statistical Association and the Institute of Mathematical Statistics. He has also served as a member of the editorial board for Statistica Sinica and Health Services & Outcomes Research Methodology, and associate editor for the Journal of the American Statistical Association. In addition, he served on a number of national and international panels, such as the Institute of Medicine's Committee on Organ