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In the past, developers of parallel science and engineering applications have been reluctant to embrace objectoriented languages due to the high abstraction penalties they incur at runtime. However, recent advances in design techniques and compiler technology have allowed C++ to emerge as a practical choice for these applications. Due to the lag in acceptance of these languages for parallel computing, there has also been a lag in commercial tool support for this application domain. This paper presents extensions made to the Vampir/GuideView (VGV) tool set to support performance analysis of object-oriented mixed MPI/OpenMP parallel applications. First, a performance data abstraction for object-oriented mixed MPI/OpenMP parallel applications is proposed. Next, the implementation of this abstraction within the VGV tool set is presented. Finally, our tool set is demonstrated by applying it to two parallel applications. VGV is the first commercial tool to provide performance analysis facilities for these types of applications.