The paper presents and elaborates on an automatic method for creating initial domain model using part of the knowledge contained in ontologies. It describes the method of how the initial domain model expressed in Unified Modeling Language (UML) can be obtained in an automated way from ontologies encoded in DAML+OIL. The solution is presented in the context of Unified Software Development Process, which uses UML as a modelling language. The elements necessary for construction of domain models are identified; a procedure for finding them in DAML+OIL encoded ontologies is described followed by suggestions for incorporation of the automatic domain model construction into software development process