William M. Hartmann (born July 28, 1939) is a noted physicist, psychoacoustician, author, and former president of the Acoustical Society of America.

Supported by a Rhodes Scholarship (Iowa and Lincoln, 1961) he studied theoretical physics with Sir Roger Elliott at Oxford University in England (D.Phil.

His sound localization research has emphasized signal confusions caused by room reflections and the strategies used by listeners to cope with them.

He has written one textbook, Signals, Sound, and Sensation (published by Springer-Verlag – AIP Press, 1997) and he was co-editor of the Springer Handbook of Acoustics (2007).

In 2001 Dr. Hartmann received the Distinguished Faculty Award from Michigan State University and the Interdisciplinary (Helmholtz–Rayleigh) ASA Silver Medal from the Acoustical Society of America.

[30] He later received the ASA Gold Medal in 2017 "for contributions to research and education in psychological acoustics and service to the society".