The document presents a framework called Knowledge-Based Process Improvement (KBPI) for improving knowledge-intense business processes using knowledge management. The KBPI was developed through theoretical research and case studies. It was then applied and tested in a case study with Tenix, an organization dependent on knowledge-intense business processes. The KBPI uses a process ontology to model business processes and an improvement methodology to identify areas for enhancement at the process and function levels. It provides organizations with a systematic way to improve knowledge processes and gain a better understanding of their operations.