L’Institut International du Théâtre – ITI maintient des relations étroites avec plusieurs organisations internationales du domaine des arts de la scène. Il existe une tradition de rencontres et de coopération entre ces différentes organisations théâtrales en relation avec l’Institut International du Théâtre, et leurs présidents sont invités aux Congrès de l’ITI.
Organisations partenaires internationales:
- Arab Theatre Institute / ATI
- European Theatre Convention / ETC-CET
- European Federation of Professional Circus Schools / FEDEC
- International Amateur Theatre Association / IATA-AITA
- International Association of Theatre Critics / IACT-AICT
- International Association of Theatre for Children and Young People / ASSITEJ
- International Drama and Theatre and Education Association / IDEA
- International Federation for Theatre Research / IFTR-FIRT
- International Federation of Actors / IFA-FIA
- International Music Council / IMC-CIM
- International Puppeteers Union / UNIMA
- International Organization of Scenographers, Theatre Architects and Technicians / OISTAT
- International Society of Libraries and Museums for the Performing Arts / SIBMAS
- International Theatre of the Oppressed Organisation / ITO
- International University Theatre Association IUTA / AITU
- On the Move, Cultural mobility information network
- Theatre Without Borders
- World Dance Alliance – WDA
- World Mime Organization – WMO