Catholijn M. Jonker (born 1967) is a Dutch computer scientist whose research in artificial intelligence has included studies of computational trust and automated negotiation in multi-agent systems and human-agent teams, and the use of mathematical logic to formalize concepts of consciousness and emotion. She is a professor at the Delft University of Technology and Leiden University.
Jonker was born in 1967; her mother was feminist author Ineke Jonker de Putter (1934–2011). After secondary school at Ashram College, a Catholic school in Alphen aan den Rijn, Jonker studied computer science at Utrecht University, earning a master's degree in 1990. She completed a Ph.D. through Utrecht University in 1994. Her dissertation, Constraints and Negations in Logic Programming, was jointly promoted by Dirk van Dalen and Jan van Leeuwen.
After working as a researcher at Vrije Universiteit Amsterdam from 1994 to 2004, she became a professor at Radboud University Nijmegen in 2004, and then moved to the Delft University of Technology in 2006. In 2017 she added a second affiliation as a professor at Leiden University, where she is currently a part-time professor in the department of media and interaction.
She was president of the Dutch National Network of Women Professors (LNVH) from 2013 to 2016.
Jonker was the founding chair of the Young Academy of the Royal Netherlands Academy of Arts and Sciences, serving as chair from 2005 to 2006 and as a member from 2005 to 2010. She was elected to the Koninklijke Hollandsche Maatschappij der Wetenschappen in 2005, to the Academia Europaea in 2013, and as a Fellow of the European Association for Artificial Intelligence in 2015.