Company lists · Data refreshed November 2026

Top 25 Merger integration consulting firms worldwide

Name: Merger integration consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 19,796 companies tracked

RevenueBase identified 19,796 company matches for merger integration consulting firms worldwide as of November 2026 and tracks 227,548 professional contacts across them, including 79,857 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for merger integration consulting firms worldwide, 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 November 5, 2026. Country and city lists for merger integration consulting firms follow the table.

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 Nov 5, 2026 How this list was built

19,796Companies

227,548Contacts tracked

79,857Verified emails

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The 25 largest merger integration consulting firms worldwide

Ranked by team size

Top 25 of 19,796 company matches for merger integration consulting firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Alvarez & Marsal	Exact match	New York, IL, United StatesHQ recorded Nov 5, 2026	10001+	14,637 contacts →
	Exact match “Alvarez & Marsal is a leading global professional services firm dedicated to helping organizations tackle their most complex business issues, maximize stakeholder value, and…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	Kearney	Exact match	Chicago, United StatesHQ recorded Nov 5, 2026	5,001-10,000	7,451 contacts →
	Exact match “As one of the original firms, we’ve never lost sight of the fact that consulting is a people business.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	Wavestone	Exact match	100-101 Terrasse Boieldieu, FranceHQ recorded Nov 5, 2026	1,001-5,000	6,512 contacts →
	Exact match “Wavestone is a leading consulting firm operating at the intersection of business and technology.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	KCA Deutag	Exact match	Portlethen, United KingdomHQ recorded Nov 5, 2026	10001+	4,355 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	Alixpartners	Exact match	New York, United StatesHQ recorded Nov 5, 2026	1,001-5,000	3,786 contacts →
	Exact match “For more than forty years, AlixPartners has helped businesses around the world respond quickly and decisively to their most critical challenges – circumstances as diverse as…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	Monitor Deloitte	Exact match	United StatesHQ recorded Nov 5, 2026	5,001-10,000	3,376 contacts →
	Exact match “To navigate the future with confidence, organizations need to make and act upon the right choices: clear, timely and inspirational choices that deliver growth in a dynamic…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	North Highland	Exact match	Atlanta, GA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,936 contacts →
	Exact match “North Highland helps businesses move from strategy to reality, taking a pragmatic and practical approach to build solutions that work and create impact that lasts.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8	Qintess	Exact match	São Paulo, BrazilHQ recorded Nov 5, 2026	1,001-5,000	1,850 contacts →
	Exact match “Experts in digital acceleration and business transformation.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	JLT Group	Exact match	London, United KingdomHQ recorded Nov 5, 2026	n/a	1,465 contacts →
	Exact match “JLT joined Marsh McLennan in April 2019 and is now part of Marsh.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	Trace3	Exact match	Irvine, MI, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,431 contacts →
	Exact match “Trace3 delivers business transformation.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	Riveron	Exact match	Dallas, NY, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,246 contacts →
	Exact match “With over 1,200 professionals across 18 international offices, Riveron delivers tailored solutions for CFOs, private equity firms, and key stakeholders.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	Horváth	Exact match	Stuttgart, GermanyHQ recorded Nov 5, 2026	1,001-5,000	1,226 contacts →
	Exact match “Horváth is an international, independent management consultancy with more than 1,300 employees across offices in Europe, the United States, and Asia.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	W3global	Exact match	Frisco, United StatesHQ recorded Nov 5, 2026	501-1,000	1,166 contacts →
	Exact match “W3Global is a leading provider of end-to-end consulting services, empowering businesses to achieve their strategic goals and optimize their operations.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	Navigant	Exact match	Chicago, IL, United StatesHQ recorded Nov 5, 2026	5,001-10,000	1,124 contacts →
	Exact match “Guidehouse is a leading global provider of consulting services to the public and commercial markets with broad capabilities in management, technology, and risk consulting.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Porsche Consulting	Exact match	Stuttgart, CA, GermanyHQ recorded Nov 5, 2026	501-1,000	1,082 contacts →
	Exact match “As a leading consultancy for putting strategies into practice, we have a clear mission: we generate competitive advantage on the basis of measurable results.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	Elogroup	Exact match	Rio De Janeiro, BrazilHQ recorded Nov 5, 2026	501-1,000	1,024 contacts →
	Exact match “EloGroup is a digital transformation consultancy that combines Technology, Analytics and Management skills in an integrated journey of value generation, from strategy to delivery.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	The Brandt Companies	Exact match	Carrollton, TX, United StatesHQ recorded Nov 5, 2026	5,001-10,000	979 contacts →
	Exact match “On January 1, 2026, The Brandt Companies completed its merger with Southland Industries.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	Eight Advisory	Exact match	Paris, FranceHQ recorded Nov 5, 2026	501-1,000	931 contacts →
	Exact match “Eight Advisory, Europe's leading independent advisory firm specialising in financial, operational and strategy consulting, is involved in transactions, restructuring and…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	Argon & CO	Exact match	Levallois-perret, FranceHQ recorded Nov 5, 2026	1,001-5,000	926 contacts →
	Exact match “Argon & Co is a global management consultancy that specialises in operations strategy and transformation.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	MANTU	Exact match	Chêne-bourg, SwitzerlandHQ recorded Nov 5, 2026	10001+	905 contacts →
	Exact match “Mantu is an international consulting and technology company.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	The Liro Group	Exact match	Syosset, NY, United StatesHQ recorded Nov 5, 2026	1,001-5,000	899 contacts →
	Exact match “The LiRo Group and Hill International’s Northeast Region have merged to become LiRo-Hill, upholding the firms’ strong, long-standing reputations as leaders in the field, and…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	Locke Lord LLP	Exact match	Chicago, United StatesHQ recorded Nov 5, 2026	1,001-5,000	859 contacts →
	Exact match “Locke Lord and Troutman Pepper merged on January 1, 2025.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	デロイトトーマツコンサルティング(合同)	Exact match	千代田区, JapanHQ recorded Nov 5, 2026	501-1,000	790 contacts →
	Exact match “is a management consulting company based out of, Japan.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	Visiativ	Exact match	Lyon, FranceHQ recorded Nov 5, 2026	1,001-5,000	770 contacts →
	Exact match “Through innovation and digitalisation, Visiativ delivers smarter ways of working that help businesses become more agile, efficient and collaborative.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	Mobilecomm Professionals, INC	Exact match	Richardson, United StatesHQ recorded Nov 5, 2026	501-1,000	724 contacts →
	Exact match “MobileComm is now fully integrated with UST.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “merger integration consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 19,796 merger integration consulting firms worldwide

See the full list, filter by size, metro and specialty, and access 79,857 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Merger integration consulting firms worldwide at a glance

As of Nov 5, 2026

35.1%Verified-email coverage

11.5Average contacts per company

1-10Median size (employees)

3.0%Largest-city concentration · London

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

14,023

11-50

4,267

51-200

1,010

201-500

233

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for merger integration consulting firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “merger integration consulting 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. 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 79,857 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 November 5, 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.

Merger integration consulting firms by location

141 lists · largest first

Every Merger integration consulting firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “merger integration consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many merger integration consulting firms are there worldwide?

RevenueBase identified 19,796 company matches for merger integration consulting firms worldwide as of November 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?

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

Which country has the most merger integration consulting firms?

The United States leads with 4,478 companies, followed by the United Kingdom (1,221) and France (1,004). Every merger integration consulting firms list by country and city is linked on this page.

Which city has the most merger integration consulting firms?

London leads with 591 company records, followed by Paris (404) and Sao Paulo (320).

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 79,857 professional contacts with verified work emails tracked across these 19,796 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 November 5, 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.