Company lists · Data refreshed September 2026

Top 25 Professional services pr agencies worldwide

RevenueBase identified 18,926 professional services pr agencies worldwide as of September 2026 and tracks 146,007 professional contacts across them, including 43,254 with verified work emails. The United States is the largest market and London the largest hub.

This list covers professional services pr agencies 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 professional services pr agencies 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
18,926Companies
146,007Contacts tracked
43,254Verified emails
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The 25 largest professional services pr agencies worldwide

Ranked by team size
Top 25 of 18,926 professional services pr agencies worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to professional services pr agencies: 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
2Partial evidenceMumbai, IndiaHQ checked Sep 21, 20261,001-5,0001,920 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
3Indirect 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
4Indirect 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
5Indirect evidenceLos Angeles, CA, United StatesHQ checked Sep 21, 2026201-500698 contacts →

Indirect evidence

“Team One was founded with one philosophical focus: to construct brands of elevated aspiration and worth by attracting affluent consumers like never before.”

Source: RevenueBase Database · checked Sep 21, 2026
6Partial evidenceSwedenHQ checked Sep 21, 2026n/a678 contacts →

Partial evidence

“FRAU offers strategic PR and project management.”

Source: RevenueBase Database · checked Sep 21, 2026
7Indirect evidenceMadrid, SpainHQ checked Sep 21, 2026501-1,000623 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
8Indirect 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
9Indirect 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
10Indirect evidenceNew Delhi, IndiaHQ checked Sep 21, 2026201-500457 contacts →

Indirect evidence

“About Avian We.”

Source: RevenueBase Database · checked Sep 21, 2026
11Indirect evidenceLondon, United KingdomHQ checked Sep 21, 202651-200449 contacts →

Indirect evidence

“Purple is independent in philosophy, attitude and operation –offering a boutique in-house approach, the strategic requirements of each client are individually tailored from the…”

Source: RevenueBase Database · checked Sep 21, 2026
12Partial evidenceMumbai, IndiaHQ checked Sep 21, 2026501-1,000444 contacts →

Partial evidence

“CONCEPT PR – is one of India's premier, full service Public Relations company with a strong presence across India.”

Source: RevenueBase Database · checked Sep 21, 2026
13Indirect evidenceSao Paulo, BrazilHQ checked Sep 21, 2026201-500441 contacts →

Indirect evidence

“Agência de comunicação full service com mais de 150 clientes nos segmentos corporativo, consumo, mídia e entretenimento, saúde, tecnologia e telecomunicações, dentre outros.”

Source: RevenueBase Database · checked Sep 21, 2026
14Partial evidenceNew York, NY, United StatesHQ checked Sep 21, 2026201-500397 contacts →

Partial evidence

“5WPR is one of the largest independently owned PR and digital marketing agencies in the US.”

Source: RevenueBase Database · checked Sep 21, 2026
15Partial evidenceNew York, NY, United StatesHQ checked Sep 21, 202651-200381 contacts →

Partial evidence

“MWW is one of the world’s leading independent, integrated PR agencies with offices across the US and UK, and a global network of partners.”

Source: RevenueBase Database · checked Sep 21, 2026
16Partial evidenceEast Sussex, United KingdomHQ checked Sep 21, 2026n/a367 contacts →

Partial evidence

“HSL is a hard-working and creative PR and marketing communications agency.”

Source: RevenueBase Database · checked Sep 21, 2026
17Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 2026201-500349 contacts →

Indirect evidence

“DKC is a full service public relations, marketing and government affairs firm and part of the Acceleration Community of Companies, Based in New York City, and with offices in Los…”

Source: RevenueBase Database · checked Sep 21, 2026
18Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 2026201-500302 contacts →

Indirect evidence

“Built to operate with the speed and intensity of a political campaign, BerlinRosen takes a 360-degree approach to communications, activating audiences and elevating story above…”

Source: RevenueBase Database · checked Sep 21, 2026
19Indirect evidenceLondon, United KingdomHQ checked Sep 21, 2026201-500292 contacts →

Indirect evidence

“Four is one of the leading independent integrated communications agencies in the UK and the Middle East.”

Source: RevenueBase Database · checked Sep 21, 2026
20Indirect evidenceSão Paulo E Rio De Janeiro, BrazilHQ checked Sep 21, 2026201-500282 contacts →

Indirect evidence

“Set up in 1996, Approach is directed by three partners with experience and credibility in the communication market.”

Source: RevenueBase Database · checked Sep 21, 2026
21Partial evidenceGerakas, GreeceHQ checked Sep 21, 2026201-500276 contacts →

Partial evidence

“Ogilvy Greece is a group of 400 professionals passionate about advertising, public relations, technology and social platforms.”

Source: RevenueBase Database · checked Sep 21, 2026
22Partial evidenceOkhla, IndiaHQ checked Sep 21, 2026201-500267 contacts →

Partial evidence

“Value 360 Communications is India’s first PR Company with a focussed approach for early stage business.”

Source: RevenueBase Database · checked Sep 21, 2026
23Indirect evidenceSpainHQ checked Sep 21, 202610001+264 contacts →

Indirect evidence

“Departamento de Comunicación Externa”

Source: RevenueBase Database · checked Sep 21, 2026
24Indirect evidenceAbu Dhabi, United Arab EmiratesHQ checked Sep 21, 2026201-500263 contacts →

Indirect evidence

“For over two decades, Viola Communications has helped brands, governments, and institutions turn ideas into growth.”

Source: RevenueBase Database · checked Sep 21, 2026
25Indirect evidenceMontreal, QC, CanadaHQ checked Sep 21, 2026201-500255 contacts →

Indirect evidence

“NATIONAL Public Relations provides creative communications solutions that move people in thought and actions.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 18,926 professional services pr agencies worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 43,254 reachable decision-makers.

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Professional services pr agencies worldwide at a glance

As of Sep 21, 2026
29.6%Verified-email coverage
7.7Average contacts per company
1-10Median size (employees)
3.6%Largest-city concentration · London
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
13,917
11-50
4,314
51-200
508
201-500
93
501-1,000
23
1,001-5,000
11
5,001-10,000
4
10001+
5

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 professional services pr agencies, 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 professional services pr agencies are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “professional services pr agencies”. 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 professional services pr agencies), 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 professional services pr agencies, 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, 43,254 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.

Professional services pr agencies by location

95 lists · largest first

Every Professional services pr 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 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 professional services pr agencies, 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 professional services pr agencies are there worldwide?

RevenueBase identified 18,926 professional services pr agencies 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 professional services pr agencies?

The United States leads with 5,050 companies, followed by the United Kingdom (1,733) and India (746). Every professional services pr agencies list by country and city is linked on this page.

Which city has the most professional services pr agencies?

London leads with 676 headquartered companies, followed by New York (527) and Los Angeles (261).

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 43,254 verified decision-maker contacts tracked across these 18,926 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.