Datapages Exploration Objects™ – DEO – is a web-based search-and-retrieval system that enables exploration geologists to find and retrieve geo-referenced, GIS-ready maps, cross-sections, seismic lines and other exploration objects faster and more easily than ever before. DEO - District Education Officer He is in charge of all education in the district. What does DEO mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: DEO. DEO is a Community for Dentists Scaling Group Practices. District Education Office is responsible for monitoring Educational, Administrative and Legal.