Zeppos & Associates
- Public relations and government affairs agency located in Milwaukee, Wisconsin, specializing in media relations and crisis management.
- http://www.zeppos.com/

Zehnder Communications, Inc.
- Includes gallery of work and awards, a description of staff personalities, and company information.[Requires Flash]
- http://www.z-comm.com/

Zanides, Linda
- An independent, business-to-business, public relations consultant. Provides PR services to companies, agencies and any businesses.
- http://zanidespr.com

Zarzycki, Michal Z.
- Comprehensive public-relations services, focusing on image-building. Based in Poland.
- http://27.michalzarzycki.gda.pl/amindex.html

Zymo
- Marketing and public relations consultancy.
- http://www.zymo.co.uk/

ZJS
- Full service marketing communications and public affairs firm.
- http://www.zjs.com/

Zarywacz
- Copywriting and business journalism to corporate literature, presentations.
- http://www.z2z.com/