Company lists · Data refreshed September 2026

Top 25 Insurance reinsurers worldwide

Name: Insurance reinsurers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 2,658 companies tracked

RevenueBase identified 2,658 insurance reinsurers worldwide as of September 2026 and tracks 300,277 professional contacts across them, including 128,404 with verified work emails and 0 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers insurance reinsurers 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 reinsurers 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

2,658Companies

300,277Contacts tracked

128,404Verified emails

0Mobile numbers

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The 25 largest insurance reinsurers worldwide

Ranked by team size

Top 25 of 2,658 insurance reinsurers worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to insurance reinsurers: 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	Liberty Mutual Insurance	Indirect evidence	Boston, MA, United StatesHQ checked Sep 17, 2026	10001+	30,330 contacts →
	Indirect evidence “At Liberty Mutual, we believe progress happens when people feel secure.” Source: RevenueBase Database · checked Sep 17, 2026
2	Swiss RE	Partial evidence	Zurich, SwitzerlandHQ checked Sep 17, 2026	10001+	13,675 contacts →
	Partial evidence “The Swiss Re Group is a leading wholesale provider of reinsurance, insurance and other insurance-based forms of risk transfer.” Source: RevenueBase Database · checked Sep 17, 2026
3	AXA XL	Partial evidence	Hamilton, BermudaHQ checked Sep 17, 2026	10001+	9,825 contacts →
	Partial evidence “We are a leading provider of insurance and reinsurance offering innovative risk management solutions for businesses worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
4	QBE Insurance	Indirect evidence	Sydney, AustraliaHQ checked Sep 17, 2026	10001+	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
5	Munich RE	Partial evidence	Munich, GermanyHQ checked Sep 17, 2026	10001+	9,143 contacts →
	Partial evidence “Munich Re is one of the world’s leading providers of reinsurance, primary insurance and insurance-related risk solutions.” Source: RevenueBase Database · checked Sep 17, 2026
6	Howden	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	10001+	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
7	Amwins	Partial evidence	Charlotte, NC, United StatesHQ checked Sep 17, 2026	5,001-10,000	4,926 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
8	Groupe Covéa	Partial evidence	Paris Cedex 9, FranceHQ checked Sep 17, 2026	10001+	4,846 contacts →
	Partial evidence “Covéa is a mutual insurance group that is a European leader in insurance and reinsurance.” Source: RevenueBase Database · checked Sep 17, 2026
9	Reinsurance Group Of America, Incorporated	Indirect evidence	Chesterfield, MO, United StatesHQ checked Sep 17, 2026	1,001-5,000	4,128 contacts →
	Indirect evidence “Reinsurance Group of America, Incorporated (NYSE: RGA) is a global industry leader specializing in life and health reinsurance and financial solutions that help clients…” Source: RevenueBase Database · checked Sep 17, 2026
10	GUY Carpenter	Partial evidence	New York, NY, United StatesHQ checked Sep 17, 2026	1,001-5,000	4,072 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
11	Santam Insurance	Indirect evidence	Bellville, South AfricaHQ checked Sep 17, 2026	5,001-10,000	3,963 contacts →
	Indirect evidence “Santam is South Africa’s leading general short-term insurer, with 108 years of industry experience.” Source: RevenueBase Database · checked Sep 17, 2026
12	SCOR	Partial evidence	Paris, FranceHQ checked Sep 17, 2026	1,001-5,000	3,467 contacts →
	Partial evidence “SCOR, one of the world’s largest reinsurers, serves more than clients worldwide, providing a diversified and innovative range of solutions to control and manage risk.” Source: RevenueBase Database · checked Sep 17, 2026
13	Everest	Partial evidence	Warren, NJ, United StatesHQ checked Sep 17, 2026	1,001-5,000	3,411 contacts →
	Partial evidence “Everest Group, Ltd.(“Everest”) is a global underwriting leader providing best-in-class property, casualty, and specialty reinsurance and insurance solutions that address…” Source: RevenueBase Database · checked Sep 17, 2026
14	SOMPO	Partial evidence	Pembroke, BermudaHQ checked Sep 17, 2026	5,001-10,000	3,309 contacts →
	Partial evidence “We are Sompo, a global provider of commercial and consumer property, casualty, and specialty insurance and reinsurance.” Source: RevenueBase Database · checked Sep 17, 2026
15	Mcgriff	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 17, 2026	1,001-5,000	3,021 contacts →
	Indirect evidence “When it comes to protecting what matters most in business and everyday life, at McGriff we believe our clients should never settle for less than the best.” Source: RevenueBase Database · checked Sep 17, 2026
16	Smabtp	Partial evidence	Paris, FranceHQ checked Sep 17, 2026	1,001-5,000	2,629 contacts →
	Partial evidence “With 4,400 employees, SMABTP provides insurance coverage for over clients and members, meeting all their insurance needs, from businesses, professionals, artisans, and executives…” Source: RevenueBase Database · checked Sep 17, 2026
17	Hannover RE	Partial evidence	Hannover, GermanyHQ checked Sep 17, 2026	1,001-5,000	2,588 contacts →
	Partial evidence “Hannover Re is one of the world’s leading reinsurers.” Source: RevenueBase Database · checked Sep 17, 2026
18	Beazley	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	1,001-5,000	2,564 contacts →
	Indirect evidence “We are a specialty insurer with more than three decades of experience in providing clients with the highest standards of underwriting and claims service worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
19	Allianz Global Corporate & Specialty Agcs	Indirect evidence	Unterföhring, GermanyHQ checked Sep 17, 2026	1,001-5,000	2,499 contacts →
	Indirect evidence “We are now Allianz Commercial!” Source: RevenueBase Database · checked Sep 17, 2026
20	Gallagher RE	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	1,001-5,000	2,463 contacts →
	Indirect evidence “Gallagher Re is one of the largest global reinsurance brokers, helping clients access the capital they need with strategic solutions built for volatile markets.” Source: RevenueBase Database · checked Sep 17, 2026
21	Axis Axis Capital	Indirect evidence	Pembroke, BermudaHQ checked Sep 17, 2026	1,001-5,000	2,329 contacts →
	Indirect evidence “In a world that never stands still – where the nature of risk is constantly evolving and the needs of your customers are continually changing – you need a partner that turns…” Source: RevenueBase Database · checked Sep 17, 2026
22	Lloyd's	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	1,001-5,000	1,891 contacts →
	Partial evidence “Lloyd’s is the only insurance marketplace of its kind in the world.” Source: RevenueBase Database · checked Sep 17, 2026
23	Berkshire Hathaway Specialty Insurance	Partial evidence	Boston, MA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,799 contacts →
	Partial evidence “Berkshire Hathaway Specialty Insurance is an organization committed to providing long-term risk solutions and claims care to our customers backed by the financial strength of…” Source: RevenueBase Database · checked Sep 17, 2026
24	WARTA	Partial evidence	Wola, PolandHQ checked Sep 17, 2026	1,001-5,000	1,703 contacts →
	Partial evidence “WARTA Insurance and Reinsurance Company maintains a steady position as the second largest insurer on the market.” Source: RevenueBase Database · checked Sep 17, 2026
25	XL Catlin	Indirect evidence	Hamilton, BermudaHQ checked Sep 17, 2026	5,001-10,000	1,687 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 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: insurance reinsurers. 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 insurance reinsurers.
Partial evidence: Its own public description names part of insurance reinsurers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name insurance reinsurers. 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 2,658 insurance reinsurers worldwide

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Insurance reinsurers worldwide at a glance

As of Sep 17, 2026

42.8%Verified-email coverage

113.0Average contacts per company

11-50Median size (employees)

6.3%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

1,076

11-50

932

51-200

361

201-500

128

501-1,000

1,001-5,000

5,001-10,000

10001+

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 reinsurers, 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: 25 countries, largest first: the United States, the United Kingdom, Brazil, India, Türkiye, Italy, France, Australia, Germany, Mexico and 15 more. Country and city lists for insurance reinsurers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “insurance reinsurers”. 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 reinsurers), 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 reinsurers, 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, 128,404 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 reinsurers by location

25 lists · largest first

Every Insurance reinsurers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 reinsurers, 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 reinsurers are there worldwide?

RevenueBase identified 2,658 insurance reinsurers 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?

Liberty Mutual Insurance, headquartered in Boston, tops this list with the largest team on record.

Which country has the most insurance reinsurers?

The United States leads with 863 companies, followed by the United Kingdom (253) and Brazil (170). Every insurance reinsurers list by country and city is linked on this page.

Which city has the most insurance reinsurers?

London leads with 168 headquartered companies, followed by Sao Paulo (62) and New York (50).

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 128,404 verified decision-maker contacts tracked across these 2,658 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.