Nhan Phan-Thien, Fellow of the Australian Academy of Science (born October 31, 1952, in AnGiang, Vietnam), is a professor of mechanical engineering at the National University of Singapore, Singapore. He has been an associate editor of Physics of Fluids since 2016, and an editorial board member of Journal Non-Newtonian Fluid Mechanics. He held a Personal Chair at University of Sydney [1991-02] and head of the Mechanical Engineering Department National University of Singapore [2016–19]. His contribution to the rheology field includes the PPT (Phan-Thien – Tanner) model for viscoelastic fluid (1084 citations) and its variant (469 citations). He is the author and co-author of several books in rheology