Dirk Jan "Dick" van de Kaa (born 5 January 1933) is a Dutch demographer.

[2][3] In 1970 the Netherlands Interdisciplinary Demographic Institute (nl) (NIDI) was created and van de Kaa was asked to become its first director.

[4][5] In the late 1970s van de Kaa formulated the idea of a second demographic transition which leads to a sub-replacement fertility-level.

Van de Kaa subsequently served as director and rector of the Netherlands Institute for Advanced Study from 1987 to 1995.

Van de Kaa was chairperson of the Sociaal Wetenschappelijke Raad of the Royal Netherlands Academy of Arts and Sciences between 1990 and 1996.

[2] Van de Kaa was elected a member of the Royal Netherlands Academy of Arts and Sciences in 1976.