- YWCA of the University of Illinois
- YWCA South Carolina
- YWCO
- ZA Consulting
- Zane State College
- Zep
- Zero Tolerance - Dynamics, Inc.
- Zeta Phi Beta Sorority, Inc.
- Ziegler Capital Markets Group
- Zingback
- Zions Bank
- Zippo Manufacturing
- Zuckerberg San Francisco General Hospital and Trauma Center
- zumBrunnen, Inc.