Software product management has gained much attention in recent years for its positive influence on corporate success in software companies. However, despite its relevance and positive influence there is only little and vague guidance concerning software product management. There is no extensive body of knowledge as in Software Engineering or Project Management. The work presented in this paper aims at developing an adequate and precise conceptual representation of the software product management domain by means of creating a domain ontology. It defines domain-specific knowledge on a more fundamental level. The developed ontology captures basic aspects of the software product management domain and represents a reasonable approach to provide a common conceptual understanding of the domain. Software Product Management, Domain Ontology, Ontology Engineering