Polypropylene (PP) is one of the most commonly used plastics. However, it has been used very little as a material for additive manufacturing so far. There are some commercial filaments in the field of fused filament fabrication (FFF). However, these often consist of copolymers or blend systems and thus do not achieve the mechanical stability that like PP homopolymers known from injection molding. The topic of this thesis is therefore the investigation of PP homopolymers and their glass fiber reinforced compounds with regard to the processability in the FFF process as well as the mechanical properties of printed parts. For this purpose, a common PP homopolymer granulate is used both as a neat material and as a compound with 10 or 20 wt% of short (210 µm) or long glass fibers (4.8 mm). In the first step, all five materials should be extruded into filaments with a diameter of 1.75 mm and then printed using the FFF technology. The mechanical properties of the printed samples should then be compared with those of injection-molded samples. The investigations showed that filaments with a suitable mean diameter could be produced from all compounds. However, the filaments with long glass fibers had a considerable roughness, so that subsequent printing was not possible. Good processability in printing has been demonstrated for neat PP and the short glass fiber reinforced compounds. With regard to the mechanical properties, a very good welding quality of the neat material led to mechanical strengths and stiffnesses in a range of the injection molded reference. A slightly lower welding quality and the presence of pores in the glass fiber reinforced parts resulted in lower mechanical values. Overall, the work showed a high potential of PP homopolymer compounds regarding processability and mechanical properties, which should be further increased in the next step by optimizing the process parameters.