Hosted annually, World Interiors Day is a longstanding program that engages a broad range of people and communities around the world. The program is structured around a theme selected by the International Federation of Interior Architects/Designers (IFI) professional community of Interior Architecture/Design associations and their members around the world.

Design professionals, students and enthusiasts, together with institutions, agencies and members of the public are invited to organize activities that explore the IFI WID theme for that year. Participation in these activities around the globe brings IFI WID to life.