Aart J. de Geus (born June 1954) is a co-founder and executive chair of Synopsys Inc., where he was CEO until January 2024.

De Geus graduated with a master's degree in electrical engineering (1978) from the École Polytechnique Fédérale de Lausanne (Swiss Federal Institute of technology), EPFL, Switzerland followed by a Ph.D. from Southern Methodist University,