- OSF Center for Health - Streator
- OSF Healthcare Saint Paul Medical Center
- OSF HealthCare Transitional Care Hospital
- OSF Heart of Mary Medical Center
- OSF Holy Family Medical Center
- OSF Little Company of Mary Medical Center
- OSF Medical Group - Ottawa
- OSF Sacred Heart Medical Center
- OSF Saint Anthony Medical Center
- OSF Saint Anthony Medical Center
- OSF Saint Clare Medical Center
- OSF Saint Elizabeth Medical Center
- OSF Saint Francis Medical Center
- OSF Saint James - John W. Albrecht Medical Center
- OSF Saint Joseph Medical Center
- OSF Saint Luke Medical Center
- OSF Saint Mary Medical Center
- OSF Saint Paul Medical Center
- OSF St. Mary Medical Center
- Parkland College
- Parkside Senior Services, L.L.C.
- Passavant Area Hospital
- Paterno Wines International, International Headquarters
- Peace Village
- Pentech Pharmaceuticals, Inc.
- Peoria Area CVB
- Prairieland United Way
- Press Ganey Associates, Inc.
- Prime Line Power Equipment Products
- Private Label Travel, Inc.
- Promac, Inc.
- Providence Life Services
- Providence Life Services Village Woods
- Provident County Hospital
- Public Benefit Broadband, Inc.
- Quaker Foods and Beverages
- Radiant Development
- Rauland-Borg Corporation
- Regional Organ Bank of Illinois
- Richland Community College
- Riverside Medical Center
- Robert Morris College
- Rock Valley College
- Rockford Health Council
- Roosvelt University
- Roseland Hospital
- Rosemont Convention Bureau
- Rotary International, World Headquarters
- RSNA
- Rush University Medical Center