In project management, a network diagram is a graphical representation of the project's activities andtheir dependencies. It shows the order in which the activities need to be performed and the logical relationships between them, such as whether they can be done in parallel or in sequence. Network diagrams are typically used in project planning and scheduling to help project managers and team members visualize the flow of work and identify the critical path of a project.

Other names for a network diagram include:

• Flowchart
• Activity diagram
• Project network diagram
• Dependency diagram
• PERT chart (Program Evaluation and Review Technique)
• CPM diagram (Critical Path Method)
• Post-it note diagram

These names may have slightly different connotations and variations in their use, but they all generally refer to a visual representation of the project's activities and their relationships.