Company lists · Data refreshed September 2026

Top 25 B2B sales and marketing agencies worldwide

Name: B2B sales and marketing agencies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 44,605 companies tracked

RevenueBase identified 44,605 B2B sales and marketing agencies worldwide as of September 2026 and tracks 328,839 professional contacts across them, including 61,626 with verified work emails. The United States is the largest market and London the largest hub.

This list covers B2B sales and marketing 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 B2B sales and marketing 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

44,605Companies

328,839Contacts tracked

61,626Verified emails

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The 25 largest B2B sales and marketing agencies worldwide

Ranked by team size

Top 25 of 44,605 B2B sales and marketing agencies worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to B2B sales and marketing 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Zoominfo	Indirect evidence	Vancouver, WA, United StatesHQ checked Sep 21, 2026	1,001-5,000	4,029 contacts →
	Indirect evidence “ZoomInfo (NASDAQ: GTM) is the go-to-market platform that helps businesses find, acquire and grow their customers.” Source: RevenueBase Database · checked Sep 21, 2026
2	Xdbs Worldwide	Partial evidence	Dubai, United Arab EmiratesHQ checked Sep 21, 2026	1,001-5,000	3,498 contacts →
	Partial evidence “At XDBS, we primarily work with media agencies, publishers and marketing companies looking to leverage marketing automation and digital marketing capacity and capability to…” Source: RevenueBase Database · checked Sep 21, 2026
3	Marketstar	Strong evidence	Ogden, UT, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,446 contacts →
	Strong evidence “MarketStar is a global B2B sales outsourcing leader with 38+ years of experience driving predictable revenue growth.” Source: RevenueBase Database · checked Sep 21, 2026
4	Webhelp Enterprise	Strong evidence	Paris, FranceHQ checked Sep 21, 2026	10001+	1,795 contacts →
	Strong evidence “The Concentrix B2B sales practice is here to design, build and run projects for our clients.” Source: RevenueBase Database · checked Sep 21, 2026
5	Verticurl A WPP Company	Partial evidence	SingaporeHQ checked Sep 21, 2026	1,001-5,000	1,256 contacts →
	Partial evidence “Verticurl, a division of Ogilvy, was established in 2006 with the mission to be the world’s leading marketing technology services agency for multinational organizations.” Source: RevenueBase Database · checked Sep 21, 2026
6	Demandscience	Indirect evidence	Boston, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,087 contacts →
	Indirect evidence “With proprietary data and omni-channel activation like events, content, programmatic and chat, we cut through the noise to reach entire buyer groups, driving engagement and impact…” Source: RevenueBase Database · checked Sep 21, 2026
7	Cience	Indirect evidence	Miami, FL, United StatesHQ checked Sep 21, 2026	201-500	1,068 contacts →
	Indirect evidence “CIENCE Technologies, Inc, founded in 2015 and headquartered in Denver, CO, is a pioneering global company in lead generation software and services, committed to transforming the…” Source: RevenueBase Database · checked Sep 21, 2026
8	2x	Strong evidence	Malvern, PA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,046 contacts →
	Strong evidence “2X is the global leader in B2B marketing-as-a-service (MaaS), a subscription-based alternative to traditional B2B marketing delivery models.” Source: RevenueBase Database · checked Sep 21, 2026
9	Machbizz Marketers PVT LTD	Strong evidence	Pune, IndiaHQ checked Sep 21, 2026	501-1,000	967 contacts →
	Strong evidence “MachBizz is a mission itself with a strong urge to accomplish its vision of B2B Digital Marketing and lead generation.” Source: RevenueBase Database · checked Sep 21, 2026
10	CPM France	Partial evidence	Neuilly Sur Seine, FranceHQ checked Sep 21, 2026	1,001-5,000	877 contacts →
	Partial evidence “CPM France associe vente, marketing et expérience client afin d'influencer l'ensemble du parcours client.” Source: RevenueBase Database · checked Sep 21, 2026
11	Ziff Davis Performance Marketing	Indirect evidence	Austin, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	821 contacts →
	Indirect evidence “ZDPM is the coming together of Salesify and DemandShore.” Source: RevenueBase Database · checked Sep 21, 2026
12	CMI Career Management INC	Strong evidence	Vienna, VA, United StatesHQ checked Sep 21, 2026	n/a	818 contacts →
	Strong evidence “CMI (Career Management Inc.) is the premier provider of Sales & Marketing search / recruiting for small to mid sized software & technology companies.” Source: RevenueBase Database · checked Sep 21, 2026
13	S2w Media	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	501-1,000	806 contacts →
	Indirect evidence “We are innovators, problem solvers, thought leaders, and above all else, a team.” Source: RevenueBase Database · checked Sep 21, 2026
14	Infuse	Strong evidence	Boca Raton, FL, United StatesHQ checked Sep 21, 2026	1,001-5,000	796 contacts →
	Strong evidence “Demand Excellence Delivered We are INFUSE, a global B2B demand and revenue marketing performance company.” Source: RevenueBase Database · checked Sep 21, 2026
15	ZAZ Vendas	Indirect evidence	Campinas, BrazilHQ checked Sep 21, 2026	501-1,000	796 contacts →
	Indirect evidence “Em um mercado cada vez mais competitivo, onde a eficiência em vendas massificadas e externas é um desafio constante, a ZAZ Vendas surge como a resposta definitiva.” Source: RevenueBase Database · checked Sep 21, 2026
16	Manlitics B2B Ites	Partial evidence	New York, United StatesHQ checked Sep 21, 2026	501-1,000	750 contacts →
	Partial evidence “In an ERA of new and emerging digital mediums, we align our core expertise of today’s ever-changing technology with a clear understanding of traditional marketing methods without…” Source: RevenueBase Database · checked Sep 21, 2026
17	Anteriad	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	501-1,000	740 contacts →
	Indirect evidence “Data Driven.” Source: RevenueBase Database · checked Sep 21, 2026
18	Abstrakt Marketing Group	Partial evidence	St Louis, MO, United StatesHQ checked Sep 21, 2026	501-1,000	724 contacts →
	Partial evidence “We book the qualified meetings that fill your pipeline for any B2B company ready to grow.” Source: RevenueBase Database · checked Sep 21, 2026
19	Digitas UK	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	501-1,000	709 contacts →
	Indirect evidence “We are Digitas.” Source: RevenueBase Database · checked Sep 21, 2026
20	Salebuild	Partial evidence	Redwood City, CA, United StatesHQ checked Sep 21, 2026	n/a	708 contacts →
	Partial evidence “Salesify, a leading provider of B2B demand generation services, helps our clients create pipeline and accelerate revenue by identifying, profiling, nurturing and connecting with…” Source: RevenueBase Database · checked Sep 21, 2026
21	Flexisales INC	Partial evidence	Las Vegas, NV, United StatesHQ checked Sep 21, 2026	201-500	697 contacts →
	Partial evidence “Flexisales, is a global frontrunner in B2B Lead & Demand Generation and Data Services, serving technology companies & agencies worldwide.” Source: RevenueBase Database · checked Sep 21, 2026
22	SCI	Indirect evidence	Miami, FL, United StatesHQ checked Sep 21, 2026	501-1,000	696 contacts →
	Indirect evidence “SCI was merged and sold to WPP in 2010.” Source: RevenueBase Database · checked Sep 21, 2026
23	Kestone	Strong evidence	Mohan Cooperative Industrial, United Arab EmiratesHQ checked Sep 21, 2026	201-500	638 contacts →
	Strong evidence “We’re a 28 years old B2B marketing agency.” Source: RevenueBase Database · checked Sep 21, 2026
24	Multiview	Strong evidence	Irving, TX, United StatesHQ checked Sep 21, 2026	501-1,000	616 contacts →
	Strong 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
25	Infinity	Strong evidence	Cedar Rapids, IA, United StatesHQ checked Sep 21, 2026	501-1,000	609 contacts →
	Strong evidence “Infinity is an award-winning inside sales agency and consulting firm with 30 years of experience helping B2B companies maximize sales and drive revenue.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: B2B sales and marketing agencies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names B2B sales and marketing agencies.
Partial evidence: Its own public description names part of B2B sales and marketing agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name B2B sales and marketing agencies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 44,605 B2B sales and marketing agencies worldwide

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B2B sales and marketing agencies worldwide at a glance

As of Sep 21, 2026

18.7%Verified-email coverage

7.4Average contacts per company

1-10Median size (employees)

2.5%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

30,925

11-50

10,913

51-200

2,075

201-500

466

501-1,000

103

1,001-5,000

5,001-10,000

10001+

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 B2B sales and marketing 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 B2B sales and marketing agencies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “B2B sales and marketing 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 B2B sales and marketing 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 B2B sales and marketing 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, 61,626 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.

B2B sales and marketing agencies by location

166 lists · largest first

Every B2B sales and marketing 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 B2B sales and marketing 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 B2B sales and marketing agencies are there worldwide?

RevenueBase identified 44,605 B2B sales and marketing 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?

Zoominfo, headquartered in Vancouver, tops this list with the largest team on record.

Which country has the most B2B sales and marketing agencies?

The United States leads with 11,026 companies, followed by the United Kingdom (3,481) and India (3,215). Every B2B sales and marketing agencies list by country and city is linked on this page.

Which city has the most B2B sales and marketing agencies?

London leads with 1137 headquartered companies, followed by Pune (602) and Sao Paulo (567).

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 61,626 verified decision-maker contacts tracked across these 44,605 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.