This article aims to design and develop Rapid Prototyping Techniques Ontology based on the study of new generation web as the Semantic Web that is a method of encoding and retrieval of information will be able to understand and process the information. To create an ontology that makes up the backbone of the Semantic Web, first, the selective techniques of rapid prototyping systems were studied, and in the operating area of the appropriate technique, knowledge was extracted with the content analysis method. The output of this process is the ontology of rapid prototyping techniques that are fully covered knowledge in a given area with more than 600 axiom, 120 classes and sub-classes, and more than 60 features. In addition to a knowledge-based view in the field of selector systems of Rapid Prototyping, opens a new arena. In the end, domain knowledge using the owl language in the Protégé application is implemented as Rapid Prototyping Ontology
