Company lists · Data refreshed September 2026

Top 25 Lean consultancies based in the United States

Name: Lean consultancies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 2,999 companies tracked

RevenueBase identified 2,999 lean consultancies headquartered in the United States as of September 2026 and tracks 15,146 professional contacts across them, including 4,416 with verified work emails. Atlanta is the largest hub.

This list covers lean consultancies headquartered in the United States, 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 28, 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 28, 2026 86% judged on-target in blind review

2,999Companies

15,146Contacts tracked

4,416Verified emails

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The 25 largest lean consultancies based in the United States

Ranked by team size

Top 25 of 2,999 lean consultancies based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to lean consultancies: 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	SEI	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 28, 2026	501-1,000	618 contacts →
	Indirect evidence “SEI is a management consulting firm delivering fresh perspectives and reliable results.” Source: RevenueBase Database · checked Sep 28, 2026
2	Skender	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	201-500	275 contacts →
	Indirect evidence “The premier construction experience.” Source: RevenueBase Database · checked Sep 28, 2026
3	Thought Logic Consulting	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	201-500	219 contacts →
	Indirect evidence “Thought logic is a functionally-led, digitally enabled consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
4	USC Consulting Group	Indirect evidence	Tampa, FL, United StatesHQ checked Sep 28, 2026	51-200	204 contacts →
	Indirect evidence “USC Consulting Group (USCCG) is an operations management and process improvement firm that empowers your people.” Source: RevenueBase Database · checked Sep 28, 2026
5	Compulink	Indirect evidence	St. Petersburg, FL, United StatesHQ checked Sep 28, 2026	201-500	189 contacts →
	Indirect evidence “Compulink is a performance based company that is focused on continuous improvement in our practices and procedures as well as the quality of service to our customers.” Source: RevenueBase Database · checked Sep 28, 2026
6	Lean SIX Sigma Institute	Partial evidence	Coronado, CA, United StatesHQ checked Sep 28, 2026	51-200	178 contacts →
	Partial evidence “Lean Six Sigma Institute provides comprehensive training and consulting services designed to help organizations navigate the challenges of today’s global marketplace.” Source: RevenueBase Database · checked Sep 28, 2026
7	TBM Consulting Group	Indirect evidence	Morrisville, NC, United StatesHQ checked Sep 28, 2026	51-200	163 contacts →
	Indirect evidence “TBM specializes in operations and supply chain consulting for manufacturers and distributors across sectors such as Food & Beverage, Pharmaceutical, Industrial Products…” Source: RevenueBase Database · checked Sep 28, 2026
8	World Wide Professional Solutions	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	152 contacts →
	Partial evidence “World Wide Professional Solutions (WWPS), a Cumming Group Company, is a project solutions organization committed to implementing lean construction, collaborative contracting, and…” Source: RevenueBase Database · checked Sep 28, 2026
9	Herren Associates	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	142 contacts →
	Indirect evidence “Here at Herren, our goals are to drive efficiency and maximize the value of every dollar our clients spend.” Source: RevenueBase Database · checked Sep 28, 2026
10	Trissential	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 28, 2026	201-500	133 contacts →
	Indirect evidence “Trissential, an Expleo Company, blends local trust with global reach, supported by experts across 29 countries.” Source: RevenueBase Database · checked Sep 28, 2026
11	Telesolv Consulting	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	201-500	132 contacts →
	Indirect evidence “To become a demand business, an organization must constantly improve the value created by its core business processes.” Source: RevenueBase Database · checked Sep 28, 2026
12	Applied Value Group	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	124 contacts →
	Indirect evidence “Founded in 1997 by Executive Chairman Bruce Grant and the late Jan Stenbeck, Applied Value Group is a leading global management consulting firm with decades of experience growing…” Source: RevenueBase Database · checked Sep 28, 2026
13	Welty Building Construction	Partial evidence	Fairlawn, OH, United StatesHQ checked Sep 28, 2026	51-200	113 contacts →
	Partial evidence “Welty Building Company provides professional construction management services, specializing in Lean Construction, for clients in a variety of healthcare, commercial, education…” Source: RevenueBase Database · checked Sep 28, 2026
14	Polytron, INC	Indirect evidence	Duluth, GA, United StatesHQ checked Sep 28, 2026	51-200	109 contacts →
	Indirect evidence “In today's manufacturing landscape, there are abundant opportunities to enhance performance; but finding the time and resources in-house can be challenging.” Source: RevenueBase Database · checked Sep 28, 2026
15	The LAB Consulting	Indirect evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	51-200	96 contacts →
	Indirect evidence “The Lab is a management consulting firm that helps executive project sponsors realize sustainable and transformative process and financial benefits for their businesses by…” Source: RevenueBase Database · checked Sep 28, 2026
16	Skiles Group	Indirect evidence	Richardson, TX, United StatesHQ checked Sep 28, 2026	51-200	91 contacts →
	Indirect evidence “We believe there’s a better way to build, and we’ve dedicated ourselves to creating it.” Source: RevenueBase Database · checked Sep 28, 2026
17	Munro & Associates	Indirect evidence	Auburn Hills, MI, United StatesHQ checked Sep 28, 2026	51-200	89 contacts →
	Indirect evidence “Munro is an engineering consulting firm with a design-first approach.” Source: RevenueBase Database · checked Sep 28, 2026
18	Censeo Consulting Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	84 contacts →
	Indirect evidence “Running an organization and executing plans is hard work.” Source: RevenueBase Database · checked Sep 28, 2026
19	Cornerstone Consulting Organization	Indirect evidence	Toledo, OH, United StatesHQ checked Sep 28, 2026	201-500	81 contacts →
	Indirect evidence “Cornerstone Consulting Organization (CCO) provides enterprise strategy and operations and manufacturing systems solutions.” Source: RevenueBase Database · checked Sep 28, 2026
20	Niktor LLC	Indirect evidence	Farmington, CT, United StatesHQ checked Sep 28, 2026	501-1,000	80 contacts →
	Indirect evidence “At Niktor, we help you get the most out of your business, no matter how big or how small, and no matter your industry or field, with a combination of process excellence, quality…” Source: RevenueBase Database · checked Sep 28, 2026
21	Rythmos	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	201-500	79 contacts →
	Indirect evidence “Our Mission.” Source: RevenueBase Database · checked Sep 28, 2026
22	Iet, Inc. Industrial Engineering & Consulting	Indirect evidence	Toledo, OH, United StatesHQ checked Sep 28, 2026	51-200	78 contacts →
	Indirect evidence “IET is a full-service industrial and manufacturing engineering service and consulting firm established in 1989.” Source: RevenueBase Database · checked Sep 28, 2026
23	Altrium	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	77 contacts →
	Indirect evidence “Founded in 2022 by a team of software engineering veterans, Altrium stands at the intersection of technology and business needs.” Source: RevenueBase Database · checked Sep 28, 2026
24	The Northridge Group	Indirect evidence	Rosemont, IL, United StatesHQ checked Sep 28, 2026	51-200	77 contacts →
	Indirect evidence “At The, we partner with organizations to improve performance, accelerate execution, and transform strategy into measurable results.” Source: RevenueBase Database · checked Sep 28, 2026
25	Fiúnex	Indirect evidence	Edison, NJ, United StatesHQ checked Sep 28, 2026	51-200	75 contacts →
	Indirect evidence “We are highly specialized profit improvement operation consulting and engineering services firm which has a proven track record in flawless execution of projects in over 25…” Source: RevenueBase Database · checked Sep 28, 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: lean consultancies. 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 lean consultancies.
Partial evidence: Its own public description names part of lean consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name lean consultancies. 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 2,999 lean consultancies based in the United States

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Lean consultancies based in the United States at a glance

As of Sep 28, 2026

29.2%Verified-email coverage

5.1Average contacts per company

1-10Median size (employees)

2.6%Largest-city concentration · Atlanta

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

2,412

11-50

450

51-200

101

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,999 companies.

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 lean consultancies, 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 the United States whose own description of what they do matches “lean consultancies”. 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 lean consultancies), 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 lean consultancies, and records with no verified work email. Companies headquartered outside United States 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, 4,416 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 28, 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.

Lean consultancies by metro

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 lean consultancies, 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 lean consultancies are there based in the United States?

RevenueBase identified 2,999 lean consultancies headquartered in the United States 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?

SEI, headquartered in Cincinnati, tops this list with the largest team on record.

Which city has the most lean consultancies?

Atlanta leads with 77 headquartered companies, followed by Houston (66) and New York (62).

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 4,416 verified decision-maker contacts tracked across these 2,999 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 28, 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.