Company lists · Data refreshed September 2026

Top 25 Marine and aviation reinsurers worldwide

Name: Marine and aviation reinsurers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 1,219 companies tracked

RevenueBase identified 1,219 marine and aviation reinsurers worldwide as of September 2026 and tracks 106,828 professional contacts across them, including 49,711 with verified work emails and 0 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers marine and aviation 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 marine and aviation 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

1,219Companies

106,828Contacts tracked

49,711Verified emails

0Mobile numbers

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The 25 largest marine and aviation reinsurers worldwide

Ranked by team size

Top 25 of 1,219 marine and aviation reinsurers worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to marine and aviation 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	AXA XL	Indirect evidence	Hamilton, BermudaHQ checked Sep 17, 2026	10001+	9,825 contacts →
	Indirect 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
2	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
3	Munich RE	Indirect evidence	Munich, GermanyHQ checked Sep 17, 2026	10001+	9,143 contacts →
	Indirect 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
4	GUY Carpenter	Indirect evidence	New York, NY, United StatesHQ checked Sep 17, 2026	1,001-5,000	4,072 contacts →
	Indirect 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
5	Everest	Indirect evidence	Warren, NJ, United StatesHQ checked Sep 17, 2026	1,001-5,000	3,411 contacts →
	Indirect 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
6	SOMPO	Indirect evidence	Pembroke, BermudaHQ checked Sep 17, 2026	5,001-10,000	3,309 contacts →
	Indirect 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
7	Markel	Indirect evidence	Glen Allen, VA, United StatesHQ checked Sep 17, 2026	1,001-5,000	3,151 contacts →
	Indirect 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
8	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
9	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
10	Sompo Seguros	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 17, 2026	501-1,000	1,844 contacts →
	Indirect evidence “Sompo Seguros S.A is a subsidiary of Sompo International, the company responsible for the insurance and reinsurance operations of the Sompo Holdings Group outside Japan.” Source: RevenueBase Database · checked Sep 17, 2026
11	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
12	GEN RE	Indirect evidence	Stamford, CT, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,542 contacts →
	Indirect evidence “Gen Re is a leading property/casualty and life/health reinsurance company.” Source: RevenueBase Database · checked Sep 17, 2026
13	Magma General Insurance Limited	Indirect evidence	Mumbai, IndiaHQ checked Sep 17, 2026	1,001-5,000	1,535 contacts →
	Indirect evidence “Sanoti Properties LLP, an entity jointly held by Adar Poonawalla (90%) and Rising Sun Holdings Pvt.” Source: RevenueBase Database · checked Sep 17, 2026
14	QBE Europe	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	1,001-5,000	1,343 contacts →
	Indirect evidence “At QBE we’re driven by our purpose of enabling a more resilient future.” Source: RevenueBase Database · checked Sep 17, 2026
15	MS Amlin	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	1,001-5,000	1,201 contacts →
	Partial evidence “We are a specialist insurer and reinsurer with a 100-year record of helping clients navigate the world’s most complex and demanding risks.” Source: RevenueBase Database · checked Sep 17, 2026
16	American Modern Insurance Group	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,113 contacts →
	Indirect evidence “American Modern provides insurance solutions for customers who need coverage not readily found in the general market.” Source: RevenueBase Database · checked Sep 17, 2026
17	Miller Insurance Services LLP	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	1,001-5,000	1,040 contacts →
	Indirect evidence “Our reputation as the finest advocates in the business comes from our exceptional people delivering exceptional results for over 120 years.” Source: RevenueBase Database · checked Sep 17, 2026
18	Safety National	Indirect evidence	St Louis, MO, United StatesHQ checked Sep 17, 2026	501-1,000	1,008 contacts →
	Indirect evidence “Safety National is a leading specialty insurance and reinsurance provider.” Source: RevenueBase Database · checked Sep 17, 2026
19	Ascot Group	Indirect evidence	London, BermudaHQ checked Sep 17, 2026	1,001-5,000	1,002 contacts →
	Indirect evidence “Ascot Group is a global specialty insurance and reinsurance group with a record of underwriting excellence and superior claims service.” Source: RevenueBase Database · checked Sep 17, 2026
20	Canopius Group	Indirect evidence	22 Bishopsgate, United KingdomHQ checked Sep 17, 2026	501-1,000	853 contacts →
	Indirect evidence “We are Canopius, a global specialty and Property & Casualty (re)insurer with offices in the UK, the US, Bermuda, Singapore and Australia.” Source: RevenueBase Database · checked Sep 17, 2026
21	Howden RE	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	1,001-5,000	752 contacts →
	Indirect evidence “The global reinsurance broker and risk, capital, and strategic advisor focused on relentless innovation and superior analytics for top client service.” Source: RevenueBase Database · checked Sep 17, 2026
22	Chaucer Group	Indirect evidence	City Of London, United KingdomHQ checked Sep 17, 2026	501-1,000	694 contacts →
	Indirect evidence “Chaucer are a leading specialty (re)insurance group working with brokers, coverholders and clients to protect and support business activities around the world.” Source: RevenueBase Database · checked Sep 17, 2026
23	Applied Underwriters	Indirect evidence	Omaha, NE, United StatesHQ checked Sep 17, 2026	1,001-5,000	680 contacts →
	Indirect evidence “Applied Underwriters® is a global risk services firm helping business and people manage uncertainty through its business services, insurance, and reinsurance solutions.” Source: RevenueBase Database · checked Sep 17, 2026
24	IGI	Partial evidence	Hamilton, BermudaHQ checked Sep 17, 2026	201-500	652 contacts →
	Partial evidence “Specialist commercial insurer and reinsurer, underwriting a diversified portfolio of specialty lines.” Source: RevenueBase Database · checked Sep 17, 2026
25	Core Specialty Insurance Holdings, INC	Partial evidence	Cincinnati, OH, United StatesHQ checked Sep 17, 2026	1,001-5,000	635 contacts →
	Partial evidence “Core Specialty, through its subsidiary insurers, offers a diversified range of property, casualty, and marine insurance products for small to mid-sized businesses.” 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: marine and aviation 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 marine and aviation reinsurers.
Partial evidence: Its own public description names part of marine and aviation reinsurers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine and aviation 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 1,219 marine and aviation reinsurers worldwide

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Marine and aviation reinsurers worldwide at a glance

As of Sep 17, 2026

46.5%Verified-email coverage

87.6Average contacts per company

11-50Median size (employees)

12.7%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

480

11-50

414

51-200

164

201-500

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 marine and aviation 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: 16 countries, largest first: the United States, the United Kingdom, Brazil, Türkiye, Germany, France, India, Australia, the United Arab Emirates, Italy and 6 more. Country and city lists for marine and aviation reinsurers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “marine and aviation 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 marine and aviation 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 marine and aviation 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, 49,711 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.

Marine and aviation reinsurers by location

16 lists · largest first

Every Marine and aviation 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 marine and aviation 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 marine and aviation reinsurers are there worldwide?

RevenueBase identified 1,219 marine and aviation 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?

AXA XL, headquartered in Hamilton, tops this list with the largest team on record.

Which country has the most marine and aviation reinsurers?

The United States leads with 295 companies, followed by the United Kingdom (238) and Brazil (91). Every marine and aviation reinsurers list by country and city is linked on this page.

Which city has the most marine and aviation reinsurers?

London leads with 155 headquartered companies, followed by Istanbul (32) and Sao Paulo (31).

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 49,711 verified decision-maker contacts tracked across these 1,219 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.