Polymer Matrix Composites course aims to inform undergraduate and graduate students in materials and manufacturing engineering programs about polymer matrix composites. In order to better understand the structure-property-application relationship in polymer matrix composites, which is the most common type of composite, the polymer matrix and fibers that make up polymer matrix composites, the polymer matrix-fiber interface and the distribution of fibers in the matrix will be examined within the scope of the course The preparation, processing and characterization (spectroscopic, rheological, thermal and mechanical) methods of different types of polymers that make up the polymer matrix will be explained in detail. Various processing and forming methods used in the preparation of polymer matrix composites will be explained by considering different types of polymer matrices. Information will be given about the thermal and mechanical characterization methods used for the polymer matrix composites. Finally, various application areas of polymer matrix composites and the materials selection criteria will be discussed.