Many of the world's top corporations and business leaders rely on IIR USA conferences, exhibitions and training events to meet their information and networking needs, including:
| ABN AMRO | Amazon.com | American Airlines |
| American Capital | American Express | Amway |
| Best Buy | BlackRock | Boeing |
| Citigroup | Colgate Palmolive Company | Credit Suisse |
| CVS Caremark Inc | Department of Justice | Deutsche Bank |
| E & J Gallo | Eloqua | Estee Lauder Companies |
| GE Energy | Hallmark Cards Inc | Honeywell |
| HSBC Bank | IBM | JP Morgan Chase & Company Inc. |
| Kimberly Clark | PMG LLP | Lexmark International Inc |
| Mastercard | Merrill Lynch | Microsoft |
| PepsiCola International | Procter & Gamble | SAS Institute |
| Spencer Stuart | The Carlyle Group | TNS |
| TPG Capital | UBS Investment Bank | Unilever |
| Visa | Wachovia | Wal-Mart |