Yes, you can still use the term "Management Representative" in your documentation, even though the specific role is no longer mentioned in ISO 9001:2015. While the 2015 version of the standard does not require a designated "Quality Management Representative," it does not prohibit using the term in your organization's documentation or procedures.
The term "Management Representative can still be meaningful within the context of your organization's quality management system. It can represent the individual or individuals who are responsible for overseeing the QMS and ensuring its effectiveness
Using the term "Management Representative" can provide clarity and a clear point of contact for QMS-related matters within your organization. However, it's essential to ensure that the responsibilities and roles associated with the "Management Representative" are clearly defined in your documentation (job description, for example). This ensures that everyone understands their responsibilities and facilitates effective communication and coordination in managing the QMS.