Cybersecurity safeguards systems, networks, and data against unauthorized access, damage, or theft. The goal of cybersecurity is to protect digital assets from various threats, including hackers, malware, and other malicious activities. A knowledge organization system in the form of taxonomies (ontologies) or background knowledge is of paramount importance in today’s world of building trust. Ontologies digitize the description of reality as knowledge models, making it accessible to learning systems. In this article, a literature survey on ontologies within the cybersecurity domain has been conducted to identify initiatives that focus on formalizing concepts from cybersecurity research. The survey aims to uncover existing efforts that use ontologies to systematically define, organize, and interlink key cybersecurity concepts, helping to establish a more structured understanding of the domain. By exploring these initiatives, the survey highlights the role of ontologies in enhancing cybersecurity practices and supporting better communication, decision-making, and knowledge sharing between various systems and stakeholders.