'''Koolhaas''' is a Dutch surname. Notable people with the surname include:
* Anton Koolhaas (1912–1992), Dutch journalist, novelist, and scenario writer * Rem Koolhaas (born 1944), Dutch architect * Caspar Koolhaas (1536–1615), Reformed theologian
==See also== * Kohlhase
{{surname|Koolhaas}}
Category:Dutch-language surnames