List of Marketing Companies
in the USA
Get verified contact information of Top decision makers like Founder, CEO, CFO, CMO, CTO, Marketing Head, HR Head, Finance Head — along with headquarters, employee count, founded year, and industry data for these companies.
Below are the 12 leading marketing companies in the USA with their top management contact details.
Top Marketing Companies in the USA
A snapshot of the largest and most influential marketing, advertising, and PR firms in the United States.
WPP Group
- Industry
- : Marketing
- Employees
- : 110,000+
- Location
- : USA
WPP Group is a US-based marketing company with 110,000+ employees. Focus: global advertising and communications holding.
Omnicom Group
- Industry
- : Marketing
- Employees
- : 75,000+
- Location
- : USA
Omnicom Group is a US-based marketing company with 75,000+ employees. Focus: advertising, pr, branding, digital.
Publicis Groupe (US)
- Industry
- : Marketing
- Employees
- : 90,000+
- Location
- : USA
Publicis Groupe (US) is a US-based marketing company with 90,000+ employees. Focus: marketing, comms, and digital transformation.
Interpublic Group (IPG)
- Industry
- : Marketing
- Employees
- : 57,000+
- Location
- : USA
Interpublic Group (IPG) is a US-based marketing company with 57,000+ employees. Focus: advertising and marketing services.
Dentsu Americas
- Industry
- : Marketing
- Employees
- : 20,000+
- Location
- : USA
Dentsu Americas is a US-based marketing company with 20,000+ employees. Focus: integrated marketing and media.
Accenture Song
- Industry
- : Marketing
- Employees
- : 50,000+
- Location
- : USA
Accenture Song is a US-based marketing company with 50,000+ employees. Focus: marketing, design, commerce, customer experience.
Edelman
- Industry
- : Marketing
- Employees
- : 6,000+
- Location
- : USA
Edelman is a US-based marketing company with 6,000+ employees. Focus: global communications and pr.
Wieden+Kennedy
- Industry
- : Marketing
- Employees
- : 1,500+
- Location
- : USA
Wieden+Kennedy is a US-based marketing company with 1,500+ employees. Focus: independent creative advertising.
VaynerMedia
- Industry
- : Marketing
- Employees
- : 2,000+
- Location
- : USA
VaynerMedia is a US-based marketing company with 2,000+ employees. Focus: social-first creative and media.
R/GA
- Industry
- : Marketing
- Employees
- : 2,500+
- Location
- : USA
R/GA is a US-based marketing company with 2,500+ employees. Focus: digital, design, and product marketing.
Ogilvy
- Industry
- : Marketing
- Employees
- : 11,000+
- Location
- : USA
Ogilvy is a US-based marketing company with 11,000+ employees. Focus: brand, advertising, and customer engagement.
BBDO Worldwide
- Industry
- : Marketing
- Employees
- : 15,000+
- Location
- : USA
BBDO Worldwide is a US-based marketing company with 15,000+ employees. Focus: creative-led advertising network.
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Frequently Asked Questions
Who are the top marketing companies in the USA?
The largest US marketing groups are WPP, Omnicom, Publicis, Interpublic Group, and Dentsu Americas — together they hold the majority of global creative billings. Independent leaders include Wieden+Kennedy, VaynerMedia, R/GA, and Edelman. EazyReach surfaces verified contacts for decision-makers at all of them.
How can I reach CMOs and growth heads at US marketing firms?
EazyReach delivers verified direct-dial phone numbers and work emails for CMOs, growth leads, business development partners, and agency founders. The Chrome extension surfaces contacts directly from LinkedIn, and EazyReach AI calling can run first-touch discovery on your behalf.
Is EazyReach a good alternative to ZoomInfo or Apollo for US agency outreach?
Yes. EazyReach offers comparable US contact coverage at a fraction of the cost, with shared credits across your whole team and a built-in calling layer. For agency-to-agency or agency-to-brand outreach, the AI calling layer alone saves SDR hours per week.
Can I filter US marketing companies by size, location, or specialty?
Yes. EazyReach lets you slice US marketing firms by city (New York, Chicago, LA, San Francisco), service line (PR, performance, creative, digital), and headcount range — then push results into your CRM or call them directly from the extension.