Company lists · Data refreshed September 2026

Top 25 Big international law firms based in Luxembourg

RevenueBase identified 102 company matches for big international law firms associated with Luxembourg as of September 2026 and tracks 1,887 professional contacts across them, including 906 with verified work emails. Luxembourg is the largest hub.

This list covers company matches for big international law firms associated with Luxembourg, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 21, 2026 How this list was built
102Companies
1,887Contacts tracked
906Verified emails
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The 25 largest big international law firms based in Luxembourg

Ranked by team size
Top 25 of 102 company matches for big international law firms based in Luxembourg, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLuxembourgHQ recorded Sep 21, 2026501-1,000840 contacts →

Exact match

“Arendt & Medernach is the leading independent business law firm in Luxembourg.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchStrassen, LuxembourgHQ recorded Sep 21, 202651-20081 contacts →

Exact match

“KLEYR_GRASSO is an independent full-service law firm specializing in business law and litigation, serving international and domestic clients for 30 years in Luxembourg with the…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchLuxembourgHQ recorded Sep 21, 202651-20062 contacts →

Exact match

“Practical and innovative legal advice regarding any transaction either domestic or multi-national.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchLuxembourgHQ recorded Sep 21, 202611-5052 contacts →

Exact match

“Brucher Thieltgen & Partners, a legal practice established in Luxembourg City at the heart of the international financial centre, is a multidisciplinary boutique firm active in…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchLuxembourgHQ recorded Sep 21, 202651-20046 contacts →

Exact match

“Based in one of the world's most important financial and holding centers, our Luxembourg office advises clients on major cross-border financings, transactions and investment…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchLuxembourgHQ recorded Sep 21, 202611-5040 contacts →

Exact match

“DSM Avocats à la Cour, an independent law firm based in Luxembourg.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchLuxembourgHQ recorded Sep 21, 202611-5037 contacts →

Exact match

“Established since 2015 in the Grand Duchy, Simmons & Simmons Luxembourg services the requirements of its clients in the Asset Management & Investment Funds and Financial…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchLuxembourgHQ recorded Sep 21, 202611-5024 contacts →

Exact match

“Brouxel & Rabia Luxembourg Law Firm ("B&R") is an independent business law firm, ventured by two of the most senior and most successful partners in Luxembourg, Samia RABIA &…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchLuxembourgHQ recorded Sep 21, 202611-5021 contacts →

Exact match

“We have shaped a firm fit for one purpose; to deliver the best possible advice for businesses, institutions and entrepreneurs.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchLuxembourgHQ recorded Sep 21, 202611-5021 contacts →

Exact match

“Hautement spécialisé en droit du travail, CASTEGNARO - Ius Laboris Luxembourg est un cabinet d’avocats qui représente exclusivement les entreprises et groupes d’entreprises de…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchL-, LuxembourgHQ recorded Sep 21, 202651-20020 contacts →

Exact match

“Since 1923, WILDGEN has been at the heart of law practice in Luxembourg.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchLuxembourgHQ recorded Sep 21, 202611-5018 contacts →

Exact match

“TURK & PRUM est un cabinet regroupant des avocats au service de la défense et de l’accompagnement de ses clients.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchLuxembourgHQ recorded Sep 21, 202611-5015 contacts →

Exact match

“THEWES & REUTER is a full service law firm offering advisory and dispute resolution services.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchLuxembourgHQ recorded Sep 21, 20261-1014 contacts →

Exact match

“Karp & Choucroun with more than 25 years of professional practice, is a law firm established in Luxembourg city, the heart of European Union institutions and international…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchLuxembourgHQ recorded Sep 21, 202611-5013 contacts →

Exact match

“At CM Law, we offer more than just legal expertise – we provide a long-term and cost-efficient relationship tailored to your needs.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchLuxembourgHQ recorded Sep 21, 202611-5013 contacts →

Exact match

“Bonn & Schmitt is a leading Luxembourg law firm.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchBertrange, LuxembourgHQ recorded Sep 21, 202611-5012 contacts →

Exact match

“Cabinet indépendant”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchLuxembourgHQ recorded Sep 21, 202611-5011 contacts →

Exact match

“Founded in 2005, Chevalier & Sciales is celebrating 20 years of advising clients on Luxembourg's most sophisticated investment, corporate and private wealth matters.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchLuxembourgHQ recorded Sep 21, 202611-5010 contacts →

Exact match

“L’étude ADAM & BLESER a été fondée en 1997.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchLuxembourgHQ recorded Sep 21, 20261-1010 contacts →

Exact match

“Notre étude est une étude d’avocats indépendante solidement ancrée à Luxembourg et offrant des services juridiques de contentieux et de conseil.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchLuxembourgHQ recorded Sep 21, 202651-20010 contacts →

Exact match

“MNKS is a top-tier highly reputable firm based in Luxembourg.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchLuxembourgHQ recorded Sep 21, 20261-1010 contacts →

Exact match

“VANDENBULKE is an independent law firm specialising in two core practices: corporate and M&A and banking & finance.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchLuxembourgHQ recorded Sep 21, 202611-509 contacts →

Exact match

“Wolff & Partners is a Luxembourg based boutique law firm with local and international expertise and extensive experience advising international corporate and private equity…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchLuxembourgHQ recorded Sep 21, 202611-509 contacts →

Exact match

“Lextrust Law Firm is an independent, multilingual, mid-sized, full-service law firm.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchLuxembourgHQ recorded Sep 21, 202611-509 contacts →

Exact match

“Our Luxembourg office is long established and highly regarded, thanks to our resilient ethos of client care and our commitment to build strong and long-term partnerships.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 102 big international law firms based in Luxembourg

See the full list, filter by size, metro and specialty, and access 906 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Big international law firms based in Luxembourg at a glance

As of Sep 21, 2026
48.0%Verified-email coverage
18.5Average contacts per company
1-10Median size (employees)
82.4%Largest-city concentration · Luxembourg
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
58
11-50
31
51-200
9
501-1,000
1
1,001-5,000
2
5,001-10,000
1

Email recency for this list is measured worldwide rather than for Luxembourg, so it is reported there. Company counts and contact totals on this page are exact for Luxembourg, over 102 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Luxembourg whose business descriptions match “big international law firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 906 professional contacts with verified work emails across the full matched dataset. 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.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Big international law firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “big international law firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many big international law firms are there based in Luxembourg?

RevenueBase identified 102 company matches for big international law firms associated with Luxembourg as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Arendt & Medernach tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most big international law firms?

Luxembourg leads with 84 company records, followed by Esch-Sur-Alzette (3) and Howald (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 906 professional contacts with verified work emails tracked across these 102 companies; direct dials are available where recorded.

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 SmartSearch, 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.