Cybersecurity is a young discipline that has gained relevance in our modern society.Thisresearchreportsthefindingsofasystematicreviewoftheliteratureonontologiesinthefieldofcybersecurity. From an initial set of 214 papers on the subject, 50 relevant papers were selected forthis SLR. With these documents we answered research questions related to the domains in whichontologies are reported, the methodologies, tools and languages used, and the verification andvalidation mechanisms reported. As results, we observed that the largest number of ontologies areclassified in the domains of infrastructure and networking, software and human factor. Regardingthe papers that report the use of a methodology for developing the ontologies (12%), Methontologyis the commonly used one. Protégé, in conjunction with the OWL language, are the preferred toolsfor ontology development. Regarding verification and validation (V&V) mechanisms, we observethat morethanhalf(62%) reporttheapplicationofV&Vmechanisms totheir ontologies.