- Global Public Affairs Inc.
 - Services in public affairs, including policy development and government relations. - Hill and Knowlton Canada
- Specializing in strategic communications.
- Brown & Cohen
- Develops communications and public affairs programs to assist businesses manage their reputation.
- GetUs Strategic Consultants
- Full service public relations, public affairs, event management, and competitive intelligence firm.
- Immedia
- PR and media relations strategies for destinations, hotels, attractions, spas, restaurants, and luxury products and services.
- Thornley Fallis Communications
- Specializing in marketing, product launches, crisis management, editorial services, and more.
- Altitude Communications
- Specializes in public relations and media programs for the aviation, aerospace, high-tech, travel, and business-to-business markets.
- Content Incorporated
- Small public and investor relations agency seeking to help companies build profile.
- R. R. Communications
- Specializing in representing small-cap companies in the high tech, industrial and resource sectors.
- Denstedt Diggle Inc.
- Offers public relations and marketing communications for the public and private sector.
- Strategic Objectives Inc
- Full-service public relations and marketing firm headquartered in Toronto, Canada.
- Apex Public Relations
- Offering strategic counsel, corporate communications, media training, creative materials, and more.
- Wordsnorth International
- Marketing communication and public relations firm located in Winnipeg Manitoba.
- StrategyCorp Inc.
- Specializing in government relations, privatizations, and strategic issue management.
- Prime Public Relations
- Full-service public relations agency and a member of the M5 group of companies.
- Bissett Matheson Communications Ltd.
- Full service public and media relations consultancy specializing in image building strategies, crisis communications, and media training.
- Checkmate Public Affairs
- Provides issues management, crisis communication and communication training services. Specializes in junk science issues.
- See Jane Run Communications
- Public relations communications company offering services including crisis management, marketing communication, speech writing, and media training.
- Carlton Concepts Canada Inc.
- Offers consultation and training in media relations.
- Al Czarnecki Communications
- Public relations and social marketing for corporations, associations, nonprofits, small business. Accredited (APR) Toronto-based communications consultant and writer.
- Cohn & Wolfe
- Public relations firm developing and executing strategic communication programs for leading organizations and top brands.
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