- Punxsutawney Area Hospital
- Purdue University Northwest
- Purolator Products Co.
- Putnam County Community Foundation
- Putnam General Hospital
- Putnam Hospital Center
- PX
- Q Unltd. Consulting
- Quaker Chemical Corp
- Quaker Foods and Beverages
- Qualcomm, Inc.
- Qualitas Solutions LLC
- Quality and Compliance Consulting, Inc.
- Quality Associates, Inc.
- Quality Fabricating Inc.
- Quality Hotel and Conference Center, Metairie, LA
- Quality Hotel Conference Center Cincinnati Blue Ash
- Quality Inn
- Quality Inn and Suites, Council Bluffs, IA
- Quality Inn Bossier City, Bossier City LA
- Quality Inn East
- Quality Inn Palm Springs Downtown
- Quality Inn, Salisbury
- Quality Living
- Quality Suites
- Quality Suites San Luis Obispo
- Quanex Corporation
- Quartz Mountain Resort and Conference Center, Lone Wolf OK
- Quay County Commissioner
- Quebecor World Buffalo, Inc
- Queen of the Valley Hospital
- Queen of the Valley Medical Center
- Queen's Medical Center
- Queens College
- Queens County Savings Bank
- Queens University of Charlotte
- Quest
- Quest Consulting Inc.
- Quest Diagnostics
- Quest Diagnostics Incorporated
- Quest Diagnostics of Kansas City
- Quest Diagnostics, Inc.
- Questar
- QuickCare
- Quitman County Hospital
- Qumas
- Quorum Consulting, Inc.
- QWEST
- R and B, Inc.
- R and L Auto Haus