The workshop aims at providing a forum for discussing the application of different aspects of ontologies to enhance Model Driven Engineering (MDE) or Model-driven software development (MDSD). More specifically, the objectives of the workshop are: To present success cases of integrated approaches; To present state-of-the-art researches covering ontologies in MDE; To encourage the modeling community to explore different aspects of ontologies like validation, verification and dynamic classification; To promote the demonstration of MDE tools using ontologies.