Company lists · Data refreshed September 2026

Top 25 Big 5 consulting firms based in Poland

Name: Big 5 consulting firms based in Poland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 236 companies tracked

RevenueBase identified 236 big 5 consulting firms headquartered in Poland as of September 2026 and tracks 3,387 professional contacts across them, including 1,388 with verified work emails and 70 with mobile numbers. Warszawa is the largest hub.

This list covers big 5 consulting firms headquartered in Poland, 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

236Companies

3,387Contacts tracked

1,388Verified emails

70Mobile numbers

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The 25 largest big 5 consulting firms based in Poland

Ranked by team size

Top 25 of 236 big 5 consulting firms based in Poland, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to big 5 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	Accenture Poland	Indirect evidence	Warszawa, PolandHQ checked Sep 23, 2026	5,001-10,000	1,738 contacts →
	Indirect evidence “Accenture to wiodąca, globalna firma świadcząca profesjonalne usługi na rzecz przedsiębiorstw, będących światowymi liderami, a także organizacji rządowych i pozarządowych.” Source: RevenueBase Database · checked Sep 23, 2026
2	EY Polska	Indirect evidence	Warszawa, PolandHQ checked Sep 23, 2026	5,001-10,000	404 contacts →
	Indirect evidence “EY jest światowym liderem rynku usług profesjonalnych obejmujących usługi audytorskie, doradztwo podatkowe, doradztwo biznesowe oraz doradztwo strategiczne i transakcyjne.” Source: RevenueBase Database · checked Sep 23, 2026
3	Infovide-Matrix	Partial evidence	Warsaw, PolandHQ checked Sep 23, 2026	501-1,000	73 contacts →
	Partial evidence “Infovide-Matrix has been a leading provider of consulting services and IT solutions in Poland.” Source: RevenueBase Database · checked Sep 23, 2026
4	Pearson	Partial evidence	Wroclaw, PolandHQ checked Sep 23, 2026	51-200	60 contacts →
	Partial evidence “We are a leading IT company and consulting firm dedicated to delivering innovative solutions and strategic guidance for businesses navigating the digital landscape.” Source: RevenueBase Database · checked Sep 23, 2026
5	Madiff	Partial evidence	Warszawa, PolandHQ checked Sep 23, 2026	51-200	56 contacts →
	Partial evidence “We are an international Innovation, IT and high-tech engineering consulting company that delivers unique value in a wide variety of industries.” Source: RevenueBase Database · checked Sep 23, 2026
6	Pbsg SA	Partial evidence	Poznań, PolandHQ checked Sep 23, 2026	11-50	37 contacts →
	Partial evidence “PBSG is one of the biggest Polish business, IT and security consulting firm.” Source: RevenueBase Database · checked Sep 23, 2026
7	Strategor	Indirect evidence	Poznań, PolandHQ checked Sep 23, 2026	11-50	32 contacts →
	Indirect evidence “Obecnie STRATEGOR to lider doradztwa europejskiego, od lat zajmujący czołowe miejsca w rankingach na najlepszych doradców unijnych w Polsce.” Source: RevenueBase Database · checked Sep 23, 2026
8	Brainstorm Group Sp. Z O.O	Indirect evidence	Dąbrowa Górnicza, PolandHQ checked Sep 23, 2026	11-50	31 contacts →
	Indirect evidence “BRAINSTORM to wiodąca marka na polskim rynku usług doradztwa biznesowego, strategicznego i szkoleń.” Source: RevenueBase Database · checked Sep 23, 2026
9	Gonextstage	Indirect evidence	Warsaw, PolandHQ checked Sep 23, 2026	11-50	23 contacts →
	Indirect evidence “A partner for organisations seeking strategic clarity and engineering precision to transform their business processes into measurable profit.” Source: RevenueBase Database · checked Sep 23, 2026
10	Valuetank	Indirect evidence	Warsaw, PolandHQ checked Sep 23, 2026	11-50	19 contacts →
	Indirect evidence “ValueTank Sp.” Source: RevenueBase Database · checked Sep 23, 2026
11	Solemis Group	Indirect evidence	Gdynia, PolandHQ checked Sep 23, 2026	11-50	17 contacts →
	Indirect evidence “We are a group of specialists in the field of process and business performance management and a provider of advanced business solutions.” Source: RevenueBase Database · checked Sep 23, 2026
12	Silfra Consulting Prosci Partner	Partial evidence	Warszawa, PolandHQ checked Sep 23, 2026	11-50	16 contacts →
	Partial evidence “SILFRA Consulting specjalizuje się we wdrażaniu strategicznych zmian: transformacji biznesowej, digitalizacji oraz podnoszeniu efektywności organizacji i procesów.” Source: RevenueBase Database · checked Sep 23, 2026
13	FSG Biznes	Indirect evidence	Poznań, PolandHQ checked Sep 23, 2026	11-50	14 contacts →
	Indirect evidence “Jesteśmy częścią Grupy FSG.” Source: RevenueBase Database · checked Sep 23, 2026
14	Compass & Partners	Indirect evidence	Warsaw, PolandHQ checked Sep 23, 2026	11-50	14 contacts →
	Indirect evidence “Jesteśmy firmą doradczą, obsługującą klientów z sektorów bankowości, usług, produkcji, handlu i dystrybucji oraz ich interesariuszy.” Source: RevenueBase Database · checked Sep 23, 2026
15	RED Ocean Platforma GRC	Indirect evidence	Warszawa, PolandHQ checked Sep 23, 2026	11-50	12 contacts →
	Indirect evidence “Red Ocean spółka z.o.o.” Source: RevenueBase Database · checked Sep 23, 2026
16	4value Business Consulting	Partial evidence	Warsaw, PolandHQ checked Sep 23, 2026	1-10	12 contacts →
	Partial evidence “KIM JESTEŚMY Tradycje 4VALUE Business Consulting sięgają 1998 roku, kiedy jako firma „CONSULT” świadczyliśmy usługi doradztwa biznesowego, zarządzania i Interim managementu na…” Source: RevenueBase Database · checked Sep 23, 2026
17	Adrenalina Consulting	Partial evidence	Warszawa, PolandHQ checked Sep 23, 2026	11-50	11 contacts →
	Partial evidence “Adrenalina Consulting - Twój partner w optymalizacji procesów biznesowych W Adrenalina Consulting jesteśmy prywatną firmą, której pracownicy zdobywali nieocenione doświadczenie w…” Source: RevenueBase Database · checked Sep 23, 2026
18	ITRUN	Partial evidence	Warsaw, PolandHQ checked Sep 23, 2026	1-10	11 contacts →
	Partial evidence “ITRun Consulting sp.” Source: RevenueBase Database · checked Sep 23, 2026
19	Carrywater Group S.A	Partial evidence	Warsaw, PolandHQ checked Sep 23, 2026	51-200	11 contacts →
	Partial evidence “Carrywater is a consulting company that has been successfully supporting its clients in managing large scale businesses and IT projects for over 15 years.” Source: RevenueBase Database · checked Sep 23, 2026
20	HNR	Indirect evidence	Warszawa, PolandHQ checked Sep 23, 2026	1-10	11 contacts →
	Indirect evidence “HNR jest firmą świadczącą usługi z zakresu doradztwa biznesowego, finansowego i informatycznego.” Source: RevenueBase Database · checked Sep 23, 2026
21	NGL Advisory	Indirect evidence	Warsaw, PolandHQ checked Sep 23, 2026	11-50	10 contacts →
	Indirect evidence “Whatever it may be – strategic, organisational, leadership or change – we help build solutions that support our clients to transform and fullfill their goals.” Source: RevenueBase Database · checked Sep 23, 2026
22	Allwins	Indirect evidence	Wrocław, PolandHQ checked Sep 23, 2026	11-50	10 contacts →
	Indirect evidence “ALLWINS is not just a company name, it is a system of values and a standard of relationships that we represent.” Source: RevenueBase Database · checked Sep 23, 2026
23	Fluent	Indirect evidence	Warszawa, PolandHQ checked Sep 23, 2026	11-50	10 contacts →
	Indirect evidence “We help our clients to increase the value and impact of their organisations through business and personal transformation.” Source: RevenueBase Database · checked Sep 23, 2026
24	INCRO	Partial evidence	Warsaw, PolandHQ checked Sep 23, 2026	11-50	9 contacts →
	Partial evidence “We are a management and strategic consulting boutique cooperating with companies from around the world.” Source: RevenueBase Database · checked Sep 23, 2026
25	Evergo	Indirect evidence	Warsaw, PolandHQ checked Sep 23, 2026	11-50	9 contacts →
	Indirect evidence “Evergo is a team of IT practitioners with solid global business experience in large organizations.” 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: big 5 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 big 5 consulting firms.
Partial evidence: Its own public description names part of big 5 consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name big 5 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 236 big 5 consulting firms based in Poland

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Big 5 consulting firms based in Poland at a glance

As of Sep 23, 2026

41.0%Verified-email coverage

2.1%Mobile-number coverage

14.4Average contacts per company

1-10Median size (employees)

22.5%Largest-city concentration · Warszawa

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

158

11-50

51-200

201-500

501-1,000

5,001-10,000

Freshness & accuracy

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

Email last verified

Median 26.0d

9330–30

36831–60

1861–90

190–180

68180+

Company record updated

Median 78.0d

00–30

98331–60

1,53761–90

65390–180

214180+

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 big 5 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 Poland whose own description of what they do matches “big 5 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 big 5 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 big 5 consulting firms, and records with no verified work email. Companies headquartered outside Poland 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, 1,388 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 big 5 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 big 5 consulting firms are there based in Poland?

RevenueBase identified 236 big 5 consulting firms headquartered in Poland 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?

Accenture Poland, headquartered in Warszawa, tops this list with the largest team on record.

Which city has the most big 5 consulting firms?

Warszawa leads with 53 headquartered companies, followed by Warsaw (46) and Wroclaw (24).

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 1,388 verified decision-maker contacts tracked across these 236 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.