Adrianus Herman Josef (Ad) Kolnaar (born 16 August 1942[1]) is a Dutch economist, and Emeritus Professor at Tilburg University.
Born in Hengelo, Overijssel, Kolnaar started to study Business Econometrics at Tilburg University in 1959.
Here, he received his MSc (cum laude) in 1964, and in 1969 his PhD (also cum laude) for the thesis "Werktijdverkorting en dynamiek" (Reduction in Working Hours and Dynamics) under supervision of Dirk Bernard Joseph Schouten.
[2] In 1965, Kolnaar started his academic career as Associate Professor at Tilburg University.
From 1974 to 1976, he was also Dean of the Faculty of Economics, and in 1975, for nine months, Rector Magnificus of Tilburg University.