Company lists · Data refreshed September 2026

Top 25 Advertising and public relations agencies worldwide

Name: Advertising and public relations agencies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 44,849 companies tracked

RevenueBase identified 44,849 company matches for advertising and public relations agencies worldwide as of September 2026 and tracks 364,224 professional contacts across them, including 83,559 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for advertising and public relations agencies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 27, 2026. Country and city lists for advertising and public relations agencies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 27, 2026 How this list was built

44,849Companies

364,224Contacts tracked

83,559Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest advertising and public relations agencies worldwide

Ranked by team size

Top 25 of 44,849 company matches for advertising and public relations agencies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Edelman	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	5,001-10,000	6,242 contacts →
	Exact match “Edelman is a global communications firm that partners with businesses and organizations to evolve, promote and protect their brands and reputations.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	Weber Shandwick	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	1,001-5,000	4,191 contacts →
	Exact match “Weber Shandwick is the earned-first global communications agency.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	Mccann Worldgroup	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	10001+	3,874 contacts →
	Exact match “McCann Worldgroup, part of the Interpublic Group (NYSE: IPG), is the irrefutable leader in the business of creativity.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	Thompson	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	5,001-10,000	3,574 contacts →
	Exact match “J.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	GREY	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	5,001-10,000	2,648 contacts →
	Exact match “Grey’s mission is to create Famously Effective ideas that move people, business, and the world forward-harnessing the power of creativity to solve business problems and deliver…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	Horizon Media	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	1,001-5,000	2,368 contacts →
	Exact match “Horizon Media is a leader in driving business-based outcomes for marketers.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7	Adfactors PR	Exact match	Mumbai, IndiaHQ recorded Sep 27, 2026	1,001-5,000	1,920 contacts →
	Exact match “Adfactors PR, founded in 1997, is India's largest Public Relations firm.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	Informal	Exact match	GreeceHQ recorded Sep 27, 2026	5,001-10,000	1,802 contacts →
	Exact match “informal is a company based out of Greece.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	Omnicom	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	10001+	1,727 contacts →
	Exact match “Omnicom is the world’s leading marketing and sales company, built for intelligent growth in the next era.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	Hill & Knowlton	Exact match	NY, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,450 contacts →
	Exact match “Hill & Knowlton is a strategic and creative partner to drive breakthrough opportunities for growth and value creation, advance corporate strategy, and build reputation capital and…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	TBC	Exact match	Baltimore, MD, United StatesHQ recorded Sep 27, 2026	n/a	1,255 contacts →
	Exact match “TBC is an independently owned, full-service branding, advertising and strategic communications agency with headquarters in Baltimore, Maryland, USA.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	GOLIN	Exact match	Chicago, IL, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,151 contacts →
	Exact match “We are a global public relations agency that helps companies create change that matters.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	Madison World	Exact match	Mumbai, IndiaHQ recorded Sep 27, 2026	1,001-5,000	963 contacts →
	Exact match “Madison World, for the last 36 years has been helping clients solve their marketing challenges and generate sustainable profits.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	MSL Global	Exact match	Paris, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	939 contacts →
	Exact match “MSL is the most powerful influence engine for brands, companies and leaders.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	Zeno Group	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	501-1,000	887 contacts →
	Exact match “Zeno Group is the fiercely independent and global, integrated communications agency, born from PR.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	Nike Communications, INC	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	n/a	872 contacts →
	Exact match “We are a full-service communications agency behind some of the world’s most revered and iconic brands.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	IVE Group	Exact match	Sydney, AustraliaHQ recorded Sep 27, 2026	1,001-5,000	860 contacts →
	Exact match “IVE Group is Australia’s largest diversified marketing company.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	Mullenlowe Lintas Group	Exact match	Mumbai, IndiaHQ recorded Sep 27, 2026	201-500	851 contacts →
	Exact match “MullenLowe Lintas Group is one of India’s largest and most admired communication groups.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19	Banco Caroni	Exact match	Caracas, VenezuelaHQ recorded Sep 27, 2026	1,001-5,000	816 contacts →
	Exact match “Responsable de actividades de Mercadeo, Publicidad, Comunicaciones Corporativas, Calidad y Gestión Comercial de la Red de 122 agencias a Nivel Nacional.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	Ruder Finn	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	1,001-5,000	815 contacts →
	Exact match “Ruder Finn is one of the world’s largest global independent integrated marketing and communications agencies, leading at the intersection of technology, human creativity, and…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	FRAU	Exact match	SwedenHQ recorded Sep 27, 2026	n/a	678 contacts →
	Exact match “FRAU offers strategic PR and project management.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22	Atrevia	Exact match	Madrid, SpainHQ recorded Sep 27, 2026	501-1,000	623 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	Another	Exact match	Miguel Hidalgo, MexicoHQ recorded Sep 27, 2026	201-500	601 contacts →
	Exact match “Was founded in 2004 between Rodrigo Peñafiel and Jaspar Eyears to fill a gap within the Mexican marketplace.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	Betc Havas	Exact match	Sao Paulo, BrazilHQ recorded Sep 27, 2026	501-1,000	600 contacts →
	Exact match “A BETC foi fundada em Paris em 1994 e segue sendo reconhecida como uma das agências mais criativas e premiadas do mundo.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	Stream Companies	Exact match	Malvern, PA, United StatesHQ recorded Sep 27, 2026	501-1,000	572 contacts →
	Exact match “Stream Companies is a full service advertising agency that specializes in launching, positioning, and long term management of brands on full service contracts and a…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “advertising and public relations agencies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 44,849 advertising and public relations agencies worldwide

See the full list, filter by size, metro and specialty, and access 83,559 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Advertising and public relations agencies worldwide at a glance

As of Sep 27, 2026

22.9%Verified-email coverage

8.1Average contacts per company

1-10Median size (employees)

1.8%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

30,487

11-50

12,077

51-200

1,663

201-500

331

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for advertising and public relations agencies are linked below.
What qualifies: Company records worldwide whose business descriptions match “advertising and public relations agencies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 83,559 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 27, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Advertising and public relations agencies by location

224 lists · largest first

Every Advertising and public relations agencies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “advertising and public relations agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many advertising and public relations agencies are there worldwide?

RevenueBase identified 44,849 company matches for advertising and public relations agencies worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Edelman tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most advertising and public relations agencies?

The United States leads with 10,531 companies, followed by India (2,783) and the United Kingdom (2,289). Every advertising and public relations agencies list by country and city is linked on this page.

Which city has the most advertising and public relations agencies?

London leads with 807 company records, followed by New York (764) and Sao Paulo (511).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 83,559 professional contacts with verified work emails tracked across these 44,849 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.

Ready to reach these companies? Verified emails and direct dials for all 44,849 advertising and public relations agencies worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.