Company lists · Data refreshed September 2026

Top 25 Business advisory and consulting firms based in Luxembourg

Name: Business advisory and consulting firms based in Luxembourg
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 199 companies tracked

RevenueBase identified 199 business advisory and consulting firms headquartered in Luxembourg as of September 2026 and tracks 5,189 professional contacts across them, including 2,103 with verified work emails and 75 with mobile numbers. Luxembourg is the largest hub.

This list covers business advisory and consulting firms headquartered in Luxembourg, 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 23, 2026.

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 23, 2026 86% judged on-target in blind review

199Companies

5,189Contacts tracked

2,103Verified emails

75Mobile numbers

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The 25 largest business advisory and consulting firms based in Luxembourg

Ranked by team size

Top 25 of 199 business advisory and consulting firms based in Luxembourg, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to business advisory and consulting 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	PWC Luxembourg	Indirect evidence	LuxembourgHQ checked Sep 23, 2026	1,001-5,000	3,413 contacts →
	Indirect evidence “PwC Luxembourg is the largest professional services firm in Luxembourg with over 3,600 people employed from 90 different countries.” Source: RevenueBase Database · checked Sep 23, 2026
2	BDO Luxembourg	Indirect evidence	LuxembourgHQ checked Sep 23, 2026	501-1,000	600 contacts →
	Indirect evidence “BDO Luxembourg is one of the largest firms of accountants, auditors and consultants in Luxembourg.” Source: RevenueBase Database · checked Sep 23, 2026
3	In Extenso Belux	Indirect evidence	Windhof, LuxembourgHQ checked Sep 23, 2026	51-200	124 contacts →
	Indirect evidence “Vous êtes chef d’entreprise, artisan, commerçant, professionnels libéral ou du secteur financier?” Source: RevenueBase Database · checked Sep 23, 2026
4	IQ Solutions Luxembourg	Partial evidence	3364 Leudelange, LuxembourgHQ checked Sep 23, 2026	51-200	73 contacts →
	Partial evidence “Solutions for business partners - Independent solutions for changing times IQ Solutions is one of the largest players in the Luxembourg financial market and offer consulting…” Source: RevenueBase Database · checked Sep 23, 2026
5	ACO Human Capital	Partial evidence	Kockelscheuer, LuxembourgHQ checked Sep 23, 2026	51-200	55 contacts →
	Partial evidence “Alcyone Consulting propose à ses clients Grand Compte une expertise reconnue dans les métiers de l'IT, Gouvernance, Compliance et se distingue par le Savoir-Faire et Savoir-Être…” Source: RevenueBase Database · checked Sep 23, 2026
6	GCP Consulting	Partial evidence	LuxembourgHQ checked Sep 23, 2026	11-50	33 contacts →
	Partial evidence “GCP Consulting is a management consulting firm specialized in strategy and change management.” Source: RevenueBase Database · checked Sep 23, 2026
7	Square Management Luxembourg	Indirect evidence	LuxembourgHQ checked Sep 23, 2026	501-1,000	31 contacts →
	Indirect evidence “Square Management Luxembourg is an international management & business consultancy firm, specialized in the financial sector, with offices in Luxembourg, Brussels and Paris.” Source: RevenueBase Database · checked Sep 23, 2026
8	Leverage Consulting Luxembourg-Genève-Paris	Strong evidence	Livange, LuxembourgHQ checked Sep 23, 2026	11-50	23 contacts →
	Strong evidence “Leverage Consulting provides Advisory and sourcing services to Financial and Insurance organisations in their IT transformation projects.” Source: RevenueBase Database · checked Sep 23, 2026
9	Ease S.A	Partial evidence	LuxembourgHQ checked Sep 23, 2026	11-50	22 contacts →
	Partial evidence “Located in Luxembourg, EASE S.A is a management consulting firm driven to provide you with a competitive edge in an increasingly complex and interconnected marketplace.” Source: RevenueBase Database · checked Sep 23, 2026
10	A3t S.A	Indirect evidence	Belvaux, LuxembourgHQ checked Sep 23, 2026	11-50	21 contacts →
	Indirect evidence “We enable clients operating in all sectors to create and manage growth by providing them timely, accurate and prudent advice on audit, accountancy, corporate and financial…” Source: RevenueBase Database · checked Sep 23, 2026
11	OYESK	Indirect evidence	Bertrange, LuxembourgHQ checked Sep 23, 2026	51-200	18 contacts →
	Indirect evidence “Welcome to Oyesk!” Source: RevenueBase Database · checked Sep 23, 2026
12	Framenatic	Indirect evidence	Wemperhardt, LuxembourgHQ checked Sep 23, 2026	11-50	15 contacts →
	Indirect evidence “We are your partner for business development, sales and corporate communications.” Source: RevenueBase Database · checked Sep 23, 2026
13	Optim'ease	Partial evidence	LuxembourgHQ checked Sep 23, 2026	11-50	14 contacts →
	Partial evidence “Founded in 2024, our consultancy binds decades of collective experience gained within renown consulting companies.” Source: RevenueBase Database · checked Sep 23, 2026
14	STRAS	Indirect evidence	LuxembourgHQ checked Sep 23, 2026	11-50	14 contacts →
	Indirect evidence “At STRAS, we understand that navigating the complex landscape of business requires more than just solutions; it demands a strategic approach.” Source: RevenueBase Database · checked Sep 23, 2026
15	Fiduciaire DES P.M.E	Indirect evidence	LuxembourgHQ checked Sep 23, 2026	11-50	12 contacts →
	Indirect evidence “L’expertise comptable, le conseil fiscal, l’administration et la gestion du personnel pour suivre la rentabilité de l’entreprise et optimiser la prise de décision.” Source: RevenueBase Database · checked Sep 23, 2026
16	Eurogroup Consulting Luxembourg	Partial evidence	LuxembourgHQ checked Sep 23, 2026	11-50	12 contacts →
	Partial evidence “Groupe de conseil volontairement européen et indépendant, Eurogroup Consulting est un cabinet de conseil en stratégie et en organisation d'entreprise, composés de praticiens et de…” Source: RevenueBase Database · checked Sep 23, 2026
17	Memola & Partners S.A	Indirect evidence	LuxembourgHQ checked Sep 23, 2026	11-50	11 contacts →
	Indirect evidence “Memola & Partners, Société Anonyme de conseil comptable, fiscal et social a été créée en 1994 et existe sous cette forme depuis 2007.” Source: RevenueBase Database · checked Sep 23, 2026
18	Traxxion S.A	Indirect evidence	Grevenmacher, LuxembourgHQ checked Sep 23, 2026	11-50	11 contacts →
	Indirect evidence “Active since 2007, TrAxxion is a venture from senior, experienced professionals with complementary backgrounds, located in and near Luxembourg.” Source: RevenueBase Database · checked Sep 23, 2026
19	B.A. Fiduciaire	Indirect evidence	LuxembourgHQ checked Sep 23, 2026	11-50	11 contacts →
	Indirect evidence “B.A.” Source: RevenueBase Database · checked Sep 23, 2026
20	Corexperts S.A	Indirect evidence	Rumelange, LuxembourgHQ checked Sep 23, 2026	11-50	11 contacts →
	Indirect evidence “Implanté à Luxembourg, notre cabinet dispose d'un réseau et d'une expertise transfrontalière.” Source: RevenueBase Database · checked Sep 23, 2026
21	Tenzing Partners	Partial evidence	LuxembourgHQ checked Sep 23, 2026	1-10	11 contacts →
	Partial evidence “Tenzing Partners is an active member of Globalscope, the international M&A advisor network of independent M&A boutiques dedicated to midcaps.” Source: RevenueBase Database · checked Sep 23, 2026
22	Syngeon S.A	Indirect evidence	LuxembourgHQ checked Sep 23, 2026	11-50	11 contacts →
	Indirect evidence “Als hochspezialisiertes und unabhängiges Beratungshaus für europäische Finanzdienstleister haben wir uns auf die Prozess- und Organisationsberatung sowie die digitale…” Source: RevenueBase Database · checked Sep 23, 2026
23	Axon Advisory & Consulting	Strong evidence	Flaxweiler, LuxembourgHQ checked Sep 23, 2026	11-50	10 contacts →
	Strong evidence “We offer unorthodox management advisory and consulting services.” Source: RevenueBase Database · checked Sep 23, 2026
24	BHB & Partners	Partial evidence	LuxembourgHQ checked Sep 23, 2026	1-10	10 contacts →
	Partial evidence “BHB & Partners is an independent advisory firm specialising in strategy, corporate finance (financial analysis, valuation, M&A) and operations (process optimisation, supply chain…” Source: RevenueBase Database · checked Sep 23, 2026
25	Dupont Partners	Indirect evidence	LuxembourgHQ checked Sep 23, 2026	11-50	9 contacts →
	Indirect evidence “Dupont Partners serve as a critical partner to plan and execute its clients’ strategies and objectives.” Source: RevenueBase Database · checked Sep 23, 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: business advisory and consulting firms. 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 business advisory and consulting firms.
Partial evidence: Its own public description names part of business advisory and consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business advisory and consulting firms. 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 199 business advisory and consulting firms based in Luxembourg

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Business advisory and consulting firms based in Luxembourg at a glance

As of Sep 23, 2026

40.5%Verified-email coverage

1.4%Mobile-number coverage

26.1Average contacts per company

1-10Median size (employees)

56.8%Largest-city concentration · Luxembourg

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

137

11-50

51-200

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 25.0d

1,6380–30

43531–60

2761–90

090–180

3180+

Company record updated

Median 63.0d

00–30

2,30131–60

1,99461–90

59590–180

299180+

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 business advisory and consulting 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.
What qualifies: Companies headquartered in Luxembourg whose own description of what they do matches “business advisory and consulting 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 business advisory and consulting 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 business advisory and consulting firms, and records with no verified work email. Companies headquartered outside Luxembourg are excluded even when they keep an office there.
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, 2,103 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 23, 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.

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 business advisory and consulting 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 business advisory and consulting firms are there based in Luxembourg?

RevenueBase identified 199 business advisory and consulting firms headquartered in Luxembourg 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?

PWC Luxembourg, headquartered in Luxembourg, tops this list with the largest team on record.

Which city has the most business advisory and consulting firms?

Luxembourg leads with 113 headquartered companies, followed by Bertrange (6) and Esch-Sur-Alzette (4).

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 2,103 verified decision-maker contacts tracked across these 199 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 23, 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.