Alumni and staff of the Interaction Design Institute Ivrea (which is now no longer based in Ivrea) have just founded an Interaction Design Association to “promote the interaction design culture, knowledge and experience” and “to create and maintain a network of contacts working in the field of interaction design”.
Unfortunately you can only join if you have studied at Interaction-Ivrea or have worked there full-time or as a consultant. So it is really an Interaction Ivrea Association.
Email this address for more info.