40 International Journal of Wireless Networks and Broadband Technologies, 3(2), 40-55, April-June 2014 Copyright © 2014, IGI Global. Copying or distributing in print or electronic forms without written permission of IGI Global is prohibited. ABSTRACT This paper reviews various efforts to define and capture the semantics of mul- timedia data. These efforts are particularly relevant to the problem of storing, managing and querying the semantic content of such data. Since there is not yet an accepted solution to the problem of how to represent, organize and manage multimedia data and the related semantics by means of a formal framework, this paper aims at providing some major research trends in this area. The focus is on ontologies, which allow the exchange of semantics of multimedia content between distributed information systems. This paper aims at reporting on recent trends in the development of multimedia ontologies. Trends in Managing Multimedia Semantics Roberto Poli, Department of Sociology and Social, University of Trento, Trento, Italy Achilles Kameas, School of Sciences and Technology, Hellenic Open University, Patras, Greece Lambrini Seremeti, School of Sciences and Technology, Hellenic Open University, Patras, Greece Keywords: Metadata, Multimedia Objects, Multimedia Ontologies, Multimedia Semantics, Ontology Matching INTRODUCTION Audiovisual resources in the form of still pictures, graphical, 3D models, audio, speech, and video play an increasing pervasive role in our lives, and there will be a growing need to manage all these multimedia objects. This is a task of increasing importance for users who need to archive, organize, and search their multimedia collections in an ap- propriate fashion. DOI: 10.4018/ijwnbt.2014040103