Company lists · Data refreshed September 2026

Top 25 Insurance brokerage firms worldwide

RevenueBase identified 41,172 insurance brokerage firms worldwide as of September 2026 and tracks 882,994 professional contacts across them, including 348,895 with verified work emails and 0 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers insurance brokerage firms 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 17, 2026. Country and city lists for insurance brokerage firms 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 17, 2026 86% judged on-target in blind review
41,172Companies
882,994Contacts tracked
348,895Verified emails
0Mobile numbers
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The 25 largest insurance brokerage firms worldwide

Ranked by team size
Top 25 of 41,172 insurance brokerage firms worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to insurance brokerage firms: 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 evidenceLondon, United KingdomHQ checked Sep 17, 202610001+63,446 contacts →

Indirect evidence

“We exist to shape decisions for the better, to protect and enrich the lives of people around the world.”

Source: RevenueBase Database · checked Sep 17, 2026
2Partial evidenceNew York, NY, United StatesHQ checked Sep 17, 202610001+32,682 contacts →

Partial evidence

“Travelers provides insurance coverage to protect the things that are important to you – your home, your car, your valuables and your business.”

Source: RevenueBase Database · checked Sep 17, 2026
3Indirect evidenceNew York, NY, United StatesHQ checked Sep 17, 202610001+15,852 contacts →

Indirect evidence

“We help our clients and colleagues grow, and our communities thrive, by protecting and promoting Possibility.”

Source: RevenueBase Database · checked Sep 17, 2026
4Indirect evidenceChicago, IL, United StatesHQ checked Sep 17, 202610001+14,217 contacts →

Indirect evidence

“Hi, we’re HUB.”

Source: RevenueBase Database · checked Sep 17, 2026
5Indirect evidenceDallas, TX, United StatesHQ checked Sep 17, 202610001+13,482 contacts →

Indirect evidence

“What makes Lockton stand apart is also what makes us better: independence.”

Source: RevenueBase Database · checked Sep 17, 2026
6Strong evidenceValhalla, NY, United StatesHQ checked Sep 17, 202610001+10,303 contacts →

Strong evidence

“USI is one of the largest insurance brokerage and consulting firms in the world, delivering property and casualty, employee benefits, personal risk, program and retirement…”

Source: RevenueBase Database · checked Sep 17, 2026
7Indirect evidenceSydney, AustraliaHQ checked Sep 17, 202610001+9,614 contacts →

Indirect evidence

“At QBE we’re driven by our purpose of enabling a more resilient future.”

Source: RevenueBase Database · checked Sep 17, 2026
8Partial evidenceWhite Plains, NY, United StatesHQ checked Sep 17, 202610001+9,086 contacts →

Partial evidence

“Marsh McLennan Agency, a business of Marsh (NYSE: MRSH), is a leading provider of business insurance, employee health & benefits, retirement & wealth, and private client insurance…”

Source: RevenueBase Database · checked Sep 17, 2026
9Partial evidenceSchaumburg, IL, United StatesHQ checked Sep 17, 20265,001-10,0008,988 contacts →

Partial evidence

“Zurich North America is one of the largest providers of insurance solutions and services to businesses and individuals.”

Source: RevenueBase Database · checked Sep 17, 2026
10Partial evidenceLondon, United KingdomHQ checked Sep 17, 202610001+7,834 contacts →

Partial evidence

“We’re Howden, the people first insurance group with employee ownership at its heart.”

Source: RevenueBase Database · checked Sep 17, 2026
11Indirect evidenceChicago, IL, United StatesHQ checked Sep 17, 20265,001-10,0006,984 contacts →

Indirect evidence

“CNA is one of the largest U.S.”

Source: RevenueBase Database · checked Sep 17, 2026
12Indirect evidencePuteaux, FranceHQ checked Sep 17, 20265,001-10,0006,821 contacts →

Indirect evidence

“Numéro 1 mondial en assurance de biens et de responsabilités, numéro 2 mondial en assurance de personnes, Allianz propose une offre complète qui couvre tous les besoins en…”

Source: RevenueBase Database · checked Sep 17, 2026
13Strong evidenceIrvine, CA, United StatesHQ checked Sep 17, 202610001+6,091 contacts →

Strong evidence

“Alliant Insurance Services is among the top 5 largest and fastest-growing insurance brokerage and consulting firms in the United States.”

Source: RevenueBase Database · checked Sep 17, 2026
14Indirect evidenceChicago, IL, United StatesHQ checked Sep 17, 20265,001-10,0005,419 contacts →

Indirect evidence

“The Kemper family of companies is one of the nation’s leading specialized insurers.”

Source: RevenueBase Database · checked Sep 17, 2026
15Partial evidenceWorcester, MA, United StatesHQ checked Sep 17, 20265,001-10,0005,132 contacts →

Partial evidence

“Rooted in our commitment to be with you, every step, The Hanover Insurance Group, Inc.”

Source: RevenueBase Database · checked Sep 17, 2026
16Partial evidenceCharlotte, NC, United StatesHQ checked Sep 17, 20265,001-10,0004,926 contacts →

Partial evidence

“Amwins is the largest wholesale distributor of specialty insurance products and services in the U.S.”

Source: RevenueBase Database · checked Sep 17, 2026
17Indirect evidenceRolling Meadows, IL, United StatesHQ checked Sep 17, 202610001+4,282 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 17, 2026
18Indirect evidenceNew York, NY, United StatesHQ checked Sep 17, 20265,001-10,0004,119 contacts →

Indirect evidence

“NFP, an Aon company, helps companies and individuals address today’s most significant Risk Capital and Human Capital challenges.”

Source: RevenueBase Database · checked Sep 17, 2026
19Partial evidenceNew York, NY, United StatesHQ checked Sep 17, 20261,001-5,0004,072 contacts →

Partial evidence

“At Guy Carpenter, a Marsh business, we deliver a powerful combination of (re)insurance broking expertise, capital solutions, global analytics, advisory, and client support…”

Source: RevenueBase Database · checked Sep 17, 2026
20Partial evidenceHannover, GermanyHQ checked Sep 17, 20265,001-10,0003,763 contacts →

Partial evidence

“HDI Global SE – Your Trusted Partner in Transformation Companies in the trading, manufacturing, and service industries need a reliable insurance partner.”

Source: RevenueBase Database · checked Sep 17, 2026
21Indirect evidenceAtlanta, GA, United StatesHQ checked Sep 17, 20265,001-10,0003,478 contacts →

Indirect evidence

“OneDigital’s team of fierce advocates helps businesses and individuals achieve their aspirations of health, success and financial security.”

Source: RevenueBase Database · checked Sep 17, 2026
22Partial evidenceAlberta, CanadaHQ checked Sep 17, 20261,001-5,0003,220 contacts →

Partial evidence

“Since 1991, we’ve had a vision: to build a network of trusted insurance brokers across the country, working directly in the communities we serve.”

Source: RevenueBase Database · checked Sep 17, 2026
23Indirect evidenceBrea, CA, United StatesHQ checked Sep 17, 20265,001-10,0003,186 contacts →

Indirect evidence

“At Mercury, we have been guided by our purpose to help people reduce risk and overcome unexpected events for more than 60 years.”

Source: RevenueBase Database · checked Sep 17, 2026
24Partial evidenceGlen Allen, VA, United StatesHQ checked Sep 17, 20261,001-5,0003,151 contacts →

Partial evidence

“As the insurance operations within the Markel Group Inc.(NYSE: MKL), we leverage a broad array of capabilities and expertise to create intelligent solutions for the most complex…”

Source: RevenueBase Database · checked Sep 17, 2026
25Indirect evidenceNew York, NY, United StatesHQ checked Sep 17, 20261,001-5,0003,060 contacts →

Indirect evidence

“With 100+ years of experience across leading industries, We apply an innovation mindset, agile approach, And a global team with local expertise wherever you operate.”

Source: RevenueBase Database · checked Sep 17, 2026

Showing 25 of 41,172 insurance brokerage firms worldwide

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Insurance brokerage firms worldwide at a glance

As of Sep 17, 2026
39.5%Verified-email coverage
21.4Average contacts per company
1-10Median size (employees)
3.5%Largest-city concentration · Sao Paulo
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
24,952
11-50
11,840
51-200
2,682
201-500
625
501-1,000
218
1,001-5,000
272
5,001-10,000
56
10001+
273

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 insurance brokerage firms, 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
57 countries, largest first: the United States, Brazil, France, Germany, the United Kingdom, Canada, Italy, Spain, Australia, Belgium and 47 more. Country and city lists for insurance brokerage firms are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “insurance brokerage firms”. 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 insurance brokerage firms), 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 insurance brokerage firms, 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, 348,895 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 17, 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.

Insurance brokerage firms by location

214 lists · largest first

Every Insurance brokerage firms 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 insurance brokerage firms, 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 insurance brokerage firms are there worldwide?

RevenueBase identified 41,172 insurance brokerage firms 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?

AON, headquartered in London, tops this list with the largest team on record.

Which country has the most insurance brokerage firms?

The United States leads with 17,022 companies, followed by Brazil (5,230) and France (2,039). Every insurance brokerage firms list by country and city is linked on this page.

Which city has the most insurance brokerage firms?

Sao Paulo leads with 1453 headquartered companies, followed by London (403) and Rio De Janeiro (347).

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 348,895 verified decision-maker contacts tracked across these 41,172 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 17, 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.