AutoCAD Users Forum - Community for AutoCAD users, with discussion boards about various related topics and software releases.
Autodesk User Group International AUGI - The user organization officially sanctioned by Autodesk for its products. Further information requires registration.
Gateway Autodesk User Group - Serves AutoCAD users in the St Louis area, with industry links and organisational information.
Peninsula AutoCAD User Group - Supports AutoCAD operators in the southeast Virginia area with meeting schedules and job listings.