William A. Raidy (c. 1923 – September 4, 1993, New York City) was an American journalist who was longtime theatre critic of both Broadway and Off-Broadway productions in New York.

Born in Manhattan, Raidy earned degrees from Georgetown University, New York University, and the Sorbonne.^[1] He also took theatre courses at the Yale School of Drama. He began his career in journalism in the mid 1940s as a features writer for the Long Island Press. In the mid 1960s he became the theatre critic for Newhouse News Service and The Star-Ledger, a position he remained in until his death three decades later. He died in 1993 at New York University Medical Center at the age of 70.^[2]