Company lists · Data refreshed September 2026

Top 25 Public relations agency services worldwide

RevenueBase identified 41,600 public relations agency services worldwide as of September 2026 and tracks 353,279 professional contacts across them, including 97,086 with verified work emails. The United States is the largest market and London the largest hub.

This list covers public relations agency services worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026. Country and city lists for public relations agency services follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review
41,600Companies
353,279Contacts tracked
97,086Verified emails
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The 25 largest public relations agency services worldwide

Ranked by team size
Top 25 of 41,600 public relations agency services worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to public relations agency services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 20265,001-10,0006,242 contacts →

Indirect evidence

“Edelman is a global communications firm that partners with businesses and organizations to evolve, promote and protect their brands and reputations.”

Source: RevenueBase Database · checked Sep 21, 2026
2Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 20261,001-5,0004,191 contacts →

Indirect evidence

“Weber Shandwick is the earned-first global communications agency.”

Source: RevenueBase Database · checked Sep 21, 2026
3Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 202610001+3,874 contacts →

Indirect evidence

“McCann Worldgroup, part of the Interpublic Group (NYSE: IPG), is the irrefutable leader in the business of creativity.”

Source: RevenueBase Database · checked Sep 21, 2026
4Indirect evidenceNew York, United StatesHQ checked Sep 21, 20265,001-10,0003,541 contacts →

Indirect evidence

“Burson is the global leader in communications, purpose-built to create value for our clients through reputation.”

Source: RevenueBase Database · checked Sep 21, 2026
5Strong evidenceMumbai, IndiaHQ checked Sep 21, 20261,001-5,0001,920 contacts →

Strong evidence

“Adfactors PR, founded in 1997, is India's largest Public Relations firm.”

Source: RevenueBase Database · checked Sep 21, 2026
6Indirect evidenceNY, United StatesHQ checked Sep 21, 20261,001-5,0001,450 contacts →

Indirect evidence

“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…”

Source: RevenueBase Database · checked Sep 21, 2026
7Indirect evidenceRio De Janeiro, BrazilHQ checked Sep 21, 2026501-1,0001,277 contacts →

Indirect evidence

“FSB Comunicações is an Integrated Communications agency focused on results.”

Source: RevenueBase Database · checked Sep 21, 2026
8Indirect evidenceBaltimore, MD, United StatesHQ checked Sep 21, 2026n/a1,255 contacts →

Indirect evidence

“TBC is an independently owned, full-service branding, advertising and strategic communications agency with headquarters in Baltimore, Maryland, USA.”

Source: RevenueBase Database · checked Sep 21, 2026
9Strong evidenceChicago, IL, United StatesHQ checked Sep 21, 20261,001-5,0001,151 contacts →

Strong evidence

“We are a global public relations agency that helps companies create change that matters.”

Source: RevenueBase Database · checked Sep 21, 2026
10Indirect evidenceMumbai, IndiaHQ checked Sep 21, 20261,001-5,000963 contacts →

Indirect evidence

“Madison World, for the last 36 years has been helping clients solve their marketing challenges and generate sustainable profits.”

Source: RevenueBase Database · checked Sep 21, 2026
11Indirect evidenceHamburg, GermanyHQ checked Sep 21, 20261,001-5,000944 contacts →

Indirect evidence

“Scholz & Friends provides an all-inclusive selection of resources to assist client partners in sharing their stories and ideas.”

Source: RevenueBase Database · checked Sep 21, 2026
12Indirect evidenceParis, United KingdomHQ checked Sep 21, 20261,001-5,000939 contacts →

Indirect evidence

“MSL is the most powerful influence engine for brands, companies and leaders.”

Source: RevenueBase Database · checked Sep 21, 2026
13Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 20261,001-5,000903 contacts →

Indirect evidence

“1300+ People.”

Source: RevenueBase Database · checked Sep 21, 2026
14Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 2026501-1,000887 contacts →

Indirect evidence

“Zeno Group is the fiercely independent and global, integrated communications agency, born from PR.”

Source: RevenueBase Database · checked Sep 21, 2026
15Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 2026n/a872 contacts →

Indirect evidence

“We are a full-service communications agency behind some of the world’s most revered and iconic brands.”

Source: RevenueBase Database · checked Sep 21, 2026
16Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 2026501-1,000821 contacts →

Indirect evidence

“Porter Novelli is the strategic communications company, fueled by innovation, empowering clients to do business better in an ever-changing world.”

Source: RevenueBase Database · checked Sep 21, 2026
17Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 20261,001-5,000815 contacts →

Indirect evidence

“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…”

Source: RevenueBase Database · checked Sep 21, 2026
18Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 2026201-500693 contacts →

Indirect evidence

“ICR is a strategic communications and advisory firm that helps management teams align how they communicate with how markets think.”

Source: RevenueBase Database · checked Sep 21, 2026
19Indirect evidenceSwedenHQ checked Sep 21, 2026n/a678 contacts →

Indirect evidence

“FRAU offers strategic PR and project management.”

Source: RevenueBase Database · checked Sep 21, 2026
20Indirect evidenceMadrid, SpainHQ checked Sep 21, 2026501-1,000623 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
21Indirect evidenceMiguel Hidalgo, MexicoHQ checked Sep 21, 2026201-500601 contacts →

Indirect evidence

“Was founded in 2004 between Rodrigo Peñafiel and Jaspar Eyears to fill a gap within the Mexican marketplace.”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidenceMalvern, PA, United StatesHQ checked Sep 21, 2026501-1,000572 contacts →

Indirect evidence

“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…”

Source: RevenueBase Database · checked Sep 21, 2026
23Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 2026201-500543 contacts →

Indirect evidence

“Prosek Partners builds – and protects – the top brands in business.”

Source: RevenueBase Database · checked Sep 21, 2026
24Indirect evidenceAtlanta, GA, United StatesHQ checked Sep 21, 2026n/a527 contacts →

Indirect evidence

“Everywhere Agency is now a part of MWWPR.”

Source: RevenueBase Database · checked Sep 21, 2026
25Indirect evidenceLas Vegas, NV, United StatesHQ checked Sep 21, 2026201-500493 contacts →

Indirect evidence

“R&R partners isn’t our name, it’s our promise.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 41,600 public relations agency services worldwide

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Public relations agency services worldwide at a glance

As of Sep 21, 2026
27.5%Verified-email coverage
8.5Average contacts per company
1-10Median size (employees)
3.3%Largest-city concentration · London
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
29,612
11-50
10,094
51-200
1,397
201-500
256
501-1,000
75
1,001-5,000
48
5,001-10,000
7
10001+
16

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among public relations agency services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for public relations agency services are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “public relations agency services”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names public relations agency services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among public relations agency services, and records with no verified work email.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 97,086 across the full list. 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 21, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Public relations agency services by location

179 lists · largest first

Every Public relations agency services 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 Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names public relations agency services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many public relations agency services are there worldwide?

RevenueBase identified 41,600 public relations agency services worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Edelman, headquartered in New York, tops this list with the largest team on record.

Which country has the most public relations agency services?

The United States leads with 9,649 companies, followed by the United Kingdom (3,205) and Brazil (1,972). Every public relations agency services list by country and city is linked on this page.

Which city has the most public relations agency services?

London leads with 1371 headquartered companies, followed by New York (1013) and Sao Paulo (689).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 97,086 verified decision-maker contacts tracked across these 41,600 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

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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 Smart Search, 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.