Company lists · Data refreshed September 2026

Top 25 Operational efficiency consultants worldwide

Name: Operational efficiency consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 49,645 companies tracked

RevenueBase identified 49,645 operational efficiency consultants worldwide as of September 2026 and tracks 399,979 professional contacts across them, including 99,137 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers operational efficiency consultants 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 20, 2026. Country and city lists for operational efficiency consultants 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 20, 2026 86% judged on-target in blind review

49,645Companies

399,979Contacts tracked

99,137Verified emails

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The 25 largest operational efficiency consultants worldwide

Ranked by team size

Top 25 of 49,645 operational efficiency consultants worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to operational efficiency consultants: 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	EXL	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	10001+	40,100 contacts →
	Indirect evidence “Choosing a digital partner is about more than capabilities, it’s about collaboration and character.” Source: RevenueBase Database · checked Sep 20, 2026
2	Kearney	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	5,001-10,000	6,978 contacts →
	Indirect evidence “As one of the original firms, we’ve never lost sight of the fact that consulting is a people business.” Source: RevenueBase Database · checked Sep 20, 2026
3	Wavestone	Indirect evidence	100-101 Terrasse Boieldieu, FranceHQ checked Sep 20, 2026	1,001-5,000	6,190 contacts →
	Indirect evidence “Wavestone is a leading consulting firm operating at the intersection of business and technology.” Source: RevenueBase Database · checked Sep 20, 2026
4	Eficacia	Indirect evidence	Cali, ColombiaHQ checked Sep 20, 2026	10001+	4,692 contacts →
	Indirect evidence “Incrementamos la productividad y eficiencia de nuestros clientes- Más de 40 años de experiencia en el mercado- Líderes en Soluciones de Mercadeo, Trade Marketing, Ventas y Gestión…” Source: RevenueBase Database · checked Sep 20, 2026
5	Management Solutions	Indirect evidence	Madrid, SpainHQ checked Sep 20, 2026	1,001-5,000	4,468 contacts →
	Indirect evidence “Management Solutions is a leading provider of business consulting services for regulated industries.” Source: RevenueBase Database · checked Sep 20, 2026
6	Alixpartners	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	1,001-5,000	3,583 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
7	Unipart	Partial evidence	Oxford, United KingdomHQ checked Sep 20, 2026	10001+	3,205 contacts →
	Partial evidence “Unipart is a supply chain performance improvement partner, delivering efficiency, resilience, and sustainability across multiple sectors.” Source: RevenueBase Database · checked Sep 20, 2026
8	Propia AB	Strong evidence	Norrköping, SwedenHQ checked Sep 20, 2026	n/a	2,448 contacts →
	Strong evidence “Propia is a Consultant Company offering competence and proven methodology within Operational Excellence.” Source: RevenueBase Database · checked Sep 20, 2026
9	Nihilent	Indirect evidence	Pune, IndiaHQ checked Sep 20, 2026	1,001-5,000	1,703 contacts →
	Indirect evidence “Nihilent is a Global Consulting and Services Company using a human-centred approach for problem-solving and change management, Nihilent’s comprehensive range of expertise in…” Source: RevenueBase Database · checked Sep 20, 2026
10	Argano	Strong evidence	Plano, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,603 contacts →
	Strong evidence “Argano is the world’s first and largest digital services consultancy focused exclusively on enabling high performance across our clients’ business operations, at scale and around…” Source: RevenueBase Database · checked Sep 20, 2026
11	MRO	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 20, 2026	1,001-5,000	1,581 contacts →
	Indirect evidence “Nós acreditamos que recursos são preciosos e precisam ser bem geridos para se perpetuar.” Source: RevenueBase Database · checked Sep 20, 2026
12	Valcon	Indirect evidence	Utrecht, NetherlandsHQ checked Sep 20, 2026	1,001-5,000	1,527 contacts →
	Indirect evidence “At Valcon, we are a European powerhouse in AI- and data-driven business transformation.” Source: RevenueBase Database · checked Sep 20, 2026
13	Izertis	Indirect evidence	Gijón, SpainHQ checked Sep 20, 2026	1,001-5,000	1,318 contacts →
	Indirect evidence “En Izertis, no solo creemos en la innovación: la vivimos.” Source: RevenueBase Database · checked Sep 20, 2026
14	Efficio	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	1,304 contacts →
	Indirect evidence “Efficio is a global leader in procurement and supply chain management and transformation.” Source: RevenueBase Database · checked Sep 20, 2026
15	Hitech Digital Solutions	Indirect evidence	Ahmedabad, IndiaHQ checked Sep 20, 2026	1,001-5,000	1,253 contacts →
	Indirect evidence “HitechDigital is an integrated digital solutions company focused on end-to-end process management and optimization, but we are not just your typical digital solutions company.” Source: RevenueBase Database · checked Sep 20, 2026
16	FBSPL	Partial evidence	New York, NY, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,224 contacts →
	Partial evidence “FBSPL is an AI-integrated consulting firm that helps businesses enhance efficiency through intelligent processes, technology, and domain expertise.” Source: RevenueBase Database · checked Sep 20, 2026
17	Infinit-O	Indirect evidence	Pasay, PhilippinesHQ checked Sep 20, 2026	1,001-5,000	1,203 contacts →
	Indirect evidence “Infinit-O empowers finance and healthcare organizations to thrive in a digital-first world by combining specialized industry expertise, innovative technology, and a commitment to…” Source: RevenueBase Database · checked Sep 20, 2026
18	Horváth	Partial evidence	Stuttgart, GermanyHQ checked Sep 20, 2026	1,001-5,000	1,193 contacts →
	Partial evidence “Horváth is a global, independent management consultancy with more than 1,400 employees at locations in Europe, the USA, and other global markets.” Source: RevenueBase Database · checked Sep 20, 2026
19	W3global	Partial evidence	Frisco, TX, United StatesHQ checked Sep 20, 2026	501-1,000	1,149 contacts →
	Partial evidence “W3Global is a leading provider of end-to-end consulting services, empowering businesses to achieve their strategic goals and optimize their operations.” Source: RevenueBase Database · checked Sep 20, 2026
20	Intelligroup	Indirect evidence	Princeton, NJ, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,121 contacts →
	Indirect evidence “Intelligroup is a global provider of innovative consulting, technology, and outsourcing services.” Source: RevenueBase Database · checked Sep 20, 2026
21	Porsche Consulting	Partial evidence	Stuttgart, GermanyHQ checked Sep 20, 2026	501-1,000	988 contacts →
	Partial evidence “As a leading consultancy for putting strategies into practice, we have a clear mission: we generate competitive advantage on the basis of measurable results.” Source: RevenueBase Database · checked Sep 20, 2026
22	Visagio	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 20, 2026	501-1,000	970 contacts →
	Indirect evidence “A Visagio Group company.” Source: RevenueBase Database · checked Sep 20, 2026
23	Production Modeling Corporation PMC	Partial evidence	Dearborn, MI, United StatesHQ checked Sep 20, 2026	n/a	970 contacts →
	Partial evidence “Today's advanced operations and industrial engineering, laser scanning and precision CAD, supply chain management, lean systems, finite capacity scheduling, software design, and…” Source: RevenueBase Database · checked Sep 20, 2026
24	RS	Indirect evidence	United StatesHQ checked Sep 20, 2026	n/a	871 contacts →
	Indirect evidence “We operate under the philosophy that successful business is only measured by its thriving client relationships.” Source: RevenueBase Database · checked Sep 20, 2026
25	Westernacher Consulting	Partial evidence	Heidelberg, United KingdomHQ checked Sep 20, 2026	1,001-5,000	865 contacts →
	Partial evidence “Founded in 1969, Westernacher Consulting operates worldwide, with consultants in Europe, Asia and the Americas.” Source: RevenueBase Database · checked Sep 20, 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: operational efficiency consultants. 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 operational efficiency consultants.
Partial evidence: Its own public description names part of operational efficiency consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name operational efficiency consultants. 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 49,645 operational efficiency consultants worldwide

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Operational efficiency consultants worldwide at a glance

As of Sep 20, 2026

24.8%Verified-email coverage

8.1Average contacts per company

1-10Median size (employees)

1.8%Largest-city concentration · Sao Paulo

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

37,872

11-50

9,026

51-200

1,900

201-500

449

501-1,000

156

1,001-5,000

110

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 operational efficiency consultants, 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: Every country. Country and city lists for operational efficiency consultants are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “operational efficiency consultants”. 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 operational efficiency consultants), 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 operational efficiency consultants, 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, 99,137 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 20, 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.

Operational efficiency consultants by location

183 lists · largest first

Every Operational efficiency consultants 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 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 operational efficiency consultants, 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 operational efficiency consultants are there worldwide?

RevenueBase identified 49,645 operational efficiency consultants 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?

EXL, headquartered in New York, tops this list with the largest team on record.

Which country has the most operational efficiency consultants?

The United States leads with 9,805 companies, followed by Brazil (3,681) and the United Kingdom (2,413). Every operational efficiency consultants list by country and city is linked on this page.

Which city has the most operational efficiency consultants?

Sao Paulo leads with 907 headquartered companies, followed by London (720) and Paris (532).

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 99,137 verified decision-maker contacts tracked across these 49,645 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 20, 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.