Abstract: The present invention comprises systems and methods for production planning analysis using discrete event simulation methods. In one embodiment, a system includes a first software module to receive process definition data for the production process that organizes the data into a suitable formatted input file that defines the process. A second software module performs a discrete event simulation on the input file and generates an output file. A third software module generates at least one user accessible file from the output file. In another embodiment, a method of analyzing a manufacturing process includes receiving process definition data for the manufacturing process, and generating an input file from the process definition data. The method further includes processing the input file in a discrete event simulation (DES) engine to generate selected statistical data for the process, and generating an output file that includes the selected statistical data.