Peter Adalbert Wolff (November 15, 1923 – September 5, 2013) was an American physicist who is considered a pioneer in semiconductor research. He earned his PhD in physics at UC Berkeley with Robert Serber as thesis advisor in 1951 and began his career at the Bell Telephone Laboratories the following year. Thereafter Wolff joined the physics department of Massachusetts Institute of Technology (MIT) in 1970, becoming head of the condensed matter and atomic physics division. Together with P. M. Platzman, he coauthored the textbook Waves and Interactions in Solid State Plasmas (1973). In 1976 he moved on to the directorship of the Research Laboratory of Electronics and then of the in 1981. Wolff left the director's chair in 1987 and retired from his faculty position in 1989 to become a fellow