Piet Paul August, Baron Van Waeyenberge (born Ghent, Belgium, 27 October 1938) is a Belgian businessman.
He graduated in 1956 from high school at the Sint-Jan Berchmanscollege in Brussels and obtained a licentiate in Commercial and Financial Sciences at the Catholic University of Louvain in 1960.
He is honorary chairman of the Vlaams Economisch Verbond (VOKA), member of the Supervisory Board of Campina Melkunie n.v., of Koninklijke Sphinx Gustavsberg n.v. and of De Eik Beheer b.v. (Nijmegen).
He is or has been chairman of cultural causes like Maison de la Radio Flagey s.a. and Flagey asbl, and board member of Quartier des Arts asbl, the International Queen Elisabeth Music Competition, of Europalia International vzw, the Vlaamse Academische Stichting vzw, and of the Francqui Foundation (Public Benefit Foundation).
He is the father of three children, including Titia Van Waeyenberge, who succeeded him as chairman of De Eik in 2018.