This study developed a project management maturity model and assessment methodology to evaluate the maturity level of project management processes in different organizations and industries. The methodology involves a 148-question survey that assesses maturity across 8 knowledge areas and 6 project phases. The survey was used to benchmark 38 companies across 4 industries. On average, companies scored a 3.26 on a 1 to 5 scale. Engineering/construction scored highest while information systems scored lowest. The study found that risk management and project execution scored lowest in maturity, while cost management and project planning scored highest. The methodology provides a way for organizations to identify opportunities to improve project management processes and assess potential returns from those improvements.