- IBM Corporation
- IGP&I Clubs
- Indian Testing Board
- Infosys Limited
- Institute of Certified Bookkeepers
- Institute of Chartered IT Professionals
- Institute of International Container Lessors
- International Association for Health Coaches (IAHC)
- International Association of Privacy Professionals
- International Capital Market Association (ICMA)
- International Coach Federation
- IRATA International
- ISDC
- iSQI
- IT Specialist
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