IIID is actively involved with The International Federation of Interior Architects / Designers (IFI) which was founded in Denmark in 1963 to unite and provide discussion of Interior Design issues within a handful of European countries. During the IFI's existence there has been tremendous growth in membership representing 52 member associations, institutions and schools in 45 countries of every continent.

The IFI collectively represents over 25,000 practicing Interior Designers worldwide. IIID was admitted to the IFI as a full member in 1995 and hosted one of the most successful IFI Congress - 'DesignSutra' at Mumbai in 2003. Presently the IIID has a representative on the IFI Board since 2001