Max J. Egenhofer is a geographer whose research has included work on spatial reasoning and knowledge representation; user interfaces for geographic information systems; the design of spatial database systems; and mobile spatial information appliances. He has been an influential figure in the development and analysis of geographical information systems (GIS) not only in academia but also in the private sector.

Egenhofer is a professor in spatial information science and engineering (since 1999), a cooperating professor in computer science (since 1991), and former director of the National Center for Geographic Information and Analysis at the University of Maine (1993–2006). He has held the Libra Professorship of the College of Engineering at the University of Maine and visiting professor appointments at the Westfälische Wilhelms-Univesität Münster, Germany (2004), and ...