This document introduces a Risk Management Maturity Model (RMMM) with four levels to assess the maturity of an organization's risk management processes. The RMMM is intended to be a simple, non-invasive tool that organizations can use to evaluate their current risk management capabilities, identify areas for improvement, and develop plans to progress to higher levels of maturity. The four levels - Ad Hoc, Initial, Repeatable, and Managed - are mapped to levels in other maturity models to allow for benchmarking. The RMMM provides a framework but is not intended to replace more formal assessment models that require greater resources.