The purpose of this paper is to review the use of ontology in the field of knowledge management in the academic domain. To conducting this systematic review, we used the guidelines from Kitchenham and used collected data sources from IEEE Xplore, Scopus, Emerald Insight, and ACM Digital Library. We collect paper from data sources by using boolean search through available tools in each publisher. The papers collected were only limited to the last five years and those using ontology as taxonomies. Our data search results found 346 articles, and there were 26 suitable articles selected based on the selection criteria we defined. Our findings concluded six types of ontology models contained in ontology-based knowledge management and three areas that mostly used ontology-based knowledge management systems. Finally, we also found important classes that form the basis for making an ontology used in knowledge management.