Company lists · Data refreshed September 2026

Top 25 IT B2B pr agencies worldwide

RevenueBase identified 15,142 IT B2B pr agencies worldwide as of September 2026 and tracks 126,859 professional contacts across them, including 40,012 with verified work emails. The United States is the largest market and London the largest hub.

This list covers IT B2B 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 IT B2B 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
15,142Companies
126,859Contacts tracked
40,012Verified emails
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The 25 largest IT B2B pr agencies worldwide

Ranked by team size
Top 25 of 15,142 IT B2B 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 IT B2B 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, 20261,001-5,0004,191 contacts →

Indirect evidence

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

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
3Partial evidenceNew York, NY, United StatesHQ checked Sep 21, 2026501-1,000887 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
4Indirect 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
5Partial evidenceMohan Cooperative Industrial, United Arab EmiratesHQ checked Sep 21, 2026201-500638 contacts →

Partial evidence

“We’re a 28 years old B2B marketing agency.”

Source: RevenueBase Database · checked Sep 21, 2026
6Indirect evidenceMadrid, SpainHQ checked Sep 21, 2026501-1,000623 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
7Partial evidenceIrving, TX, United StatesHQ checked Sep 21, 2026501-1,000616 contacts →

Partial evidence

“Multiview is a B2B digital marketing agency helping associations and businesses reach, engage and grow their most valued relationships.”

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
9Partial evidenceLondon, United StatesHQ checked Sep 21, 2026201-500495 contacts →

Partial evidence

“We get it.”

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
12Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 20261,001-5,000449 contacts →

Indirect evidence

“BCW is the global communications agency built to move people.”

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 evidenceSan Jose, CA, United StatesHQ checked Sep 21, 2026201-500441 contacts →

Partial evidence

“Defining communications broadly to include digital, content marketing, thought leadership as well as traditional PR, The Hoffman Agency knows how to differentiate brands and…”

Source: RevenueBase Database · checked Sep 21, 2026
15Partial evidenceKyiv, UkraineHQ checked Sep 21, 2026n/a414 contacts →

Partial evidence

“СFC Big Ideas is a communications agency specializing in international projects, government relations & PR.”

Source: RevenueBase Database · checked Sep 21, 2026
16Partial 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
17Partial 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
18Partial 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
19Indirect 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
20Partial evidenceGurgaon, IndiaHQ checked Sep 21, 202651-200306 contacts →

Partial evidence

PR Pundit Havas Red, part of the Havas Group (one of the world’s largest advertising and communication networks), is an award-winning integrated communications consultancy with a…”

Source: RevenueBase Database · checked Sep 21, 2026
21Indirect 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
22Indirect evidenceSyracuse, NY, United StatesHQ checked Sep 21, 202651-200297 contacts →

Indirect evidence

“Mower is an independent, women-led and employee-owned marketing, advertising and public relations agency with over 50 years of experience helping brands connect with their…”

Source: RevenueBase Database · checked Sep 21, 2026
23Partial evidenceWorthington, OH, United StatesHQ checked Sep 21, 2026n/a290 contacts →

Partial evidence

“An integrated B2B agency of strategists and execution specialists, Marketing Works is outcomes driven, strategy focused and values-based.”

Source: RevenueBase Database · checked Sep 21, 2026
24Indirect 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
25Partial evidenceWoodland Hills, CA, United StatesHQ checked Sep 21, 202651-200278 contacts →

Partial evidence

“1105 Media, Inc, is a leading business-to-business (B2B) services provider whose sole mission is to help our customers grow their business.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 15,142 IT B2B pr agencies worldwide

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IT B2B pr agencies worldwide at a glance

As of Sep 21, 2026
31.5%Verified-email coverage
8.4Average contacts per company
1-10Median size (employees)
3.5%Largest-city concentration · London
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
10,773
11-50
3,729
51-200
470
201-500
82
501-1,000
25
1,001-5,000
12
5,001-10,000
4
10001+
6

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 IT B2B 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 IT B2B pr agencies are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “IT B2B 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 IT B2B 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 IT B2B 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, 40,012 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.

IT B2B pr agencies by location

90 lists · largest first

Every IT B2B 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 IT B2B 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 IT B2B pr agencies are there worldwide?

RevenueBase identified 15,142 IT B2B 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?

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

Which country has the most IT B2B pr agencies?

The United States leads with 3,857 companies, followed by the United Kingdom (1,539) and Germany (725). Every IT B2B pr agencies list by country and city is linked on this page.

Which city has the most IT B2B pr agencies?

London leads with 536 headquartered companies, followed by New York (353) and Sao Paulo (230).

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 40,012 verified decision-maker contacts tracked across these 15,142 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.