Company lists · Data refreshed September 2026

Top 25 Lean manufacturing consultants based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 1,773 companies tracked

RevenueBase identified 1,773 lean manufacturing consultants headquartered in the United States as of September 2026 and tracks 9,123 professional contacts across them, including 2,459 with verified work emails. Houston is the largest hub.

This list covers lean manufacturing consultants 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 17, 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 17, 2026 86% judged on-target in blind review

1,773Companies

9,123Contacts tracked

2,459Verified emails

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The 25 largest lean manufacturing consultants based in the United States

Ranked by team size

Top 25 of 1,773 lean manufacturing consultants based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to lean manufacturing 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	Okin Process	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 17, 2026	501-1,000	310 contacts →
	Indirect evidence “At OKIN Process, we won’t just lighten your workload.” Source: RevenueBase Database · checked Sep 17, 2026
2	Production Services Management INC	Indirect evidence	Saline, MI, United StatesHQ checked Sep 17, 2026	201-500	273 contacts →
	Indirect evidence “PSMI was founded in 2005 with the sole objective of increasing operational effectiveness by reducing tooling and MRO spending.” Source: RevenueBase Database · checked Sep 17, 2026
3	Graymatter	Indirect evidence	Sewickley, PA, United StatesHQ checked Sep 17, 2026	201-500	243 contacts →
	Indirect evidence “At GrayMatter, smart thinking meets decisive doing.” Source: RevenueBase Database · checked Sep 17, 2026
4	USC Consulting Group	Indirect evidence	Tampa, FL, United StatesHQ checked Sep 17, 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 17, 2026
5	Compulink	Indirect evidence	St. Petersburg, FL, United StatesHQ checked Sep 17, 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 17, 2026
6	TBM Consulting Group	Indirect evidence	Morrisville, NC, United StatesHQ checked Sep 17, 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 17, 2026
7	ITAC	Indirect evidence	New York, NY, United StatesHQ checked Sep 17, 2026	n/a	150 contacts →
	Indirect evidence “ITAC is a leading consulting organization located in New York City.” Source: RevenueBase Database · checked Sep 17, 2026
8	EAC Product Development Solutions	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 17, 2026	51-200	110 contacts →
	Indirect evidence “At EAC Product Development Solutions, we are dedicated to transforming the way companies design, manufacture, connect to, and service their products.” Source: RevenueBase Database · checked Sep 17, 2026
9	Polytron, INC	Partial evidence	Duluth, GA, United StatesHQ checked Sep 17, 2026	51-200	109 contacts →
	Partial 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 17, 2026
10	Munro & Associates	Indirect evidence	Auburn Hills, MI, United StatesHQ checked Sep 17, 2026	51-200	89 contacts →
	Indirect evidence “Munro is an engineering consulting firm with a design-first approach.” Source: RevenueBase Database · checked Sep 17, 2026
11	Cornerstone Consulting Organization	Partial evidence	Toledo, OH, United StatesHQ checked Sep 17, 2026	201-500	81 contacts →
	Partial evidence “Cornerstone Consulting Organization (CCO) provides enterprise strategy and operations and manufacturing systems solutions.” Source: RevenueBase Database · checked Sep 17, 2026
12	Iet, Inc. Industrial Engineering & Consulting	Partial evidence	Toledo, OH, United StatesHQ checked Sep 17, 2026	51-200	78 contacts →
	Partial evidence “IET is a full-service industrial and manufacturing engineering service and consulting firm established in 1989.” Source: RevenueBase Database · checked Sep 17, 2026
13	Altrium	Indirect evidence	New York, NY, United StatesHQ checked Sep 17, 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 17, 2026
14	Fiúnex	Indirect evidence	Edison, NJ, United StatesHQ checked Sep 17, 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 17, 2026
15	Lean Focus	Indirect evidence	La Jolla, CA, United StatesHQ checked Sep 17, 2026	51-200	74 contacts →
	Indirect evidence “Every business has the same goal in mind: an increased bottom line.” Source: RevenueBase Database · checked Sep 17, 2026
16	Next Level Partners , LLC	Indirect evidence	Naples, FL, United StatesHQ checked Sep 17, 2026	51-200	73 contacts →
	Indirect evidence “NEXT LEVEL Partners® is much more than a consulting firm, we’re your partner in creating self-sustaining capability through Business Enterprise Transformation, Knowledge…” Source: RevenueBase Database · checked Sep 17, 2026
17	FTE Factory Advisors	Partial evidence	Troy, MI, United StatesHQ checked Sep 17, 2026	11-50	62 contacts →
	Partial evidence “Factory Advisors \| Operational Excellence Starts on the Factory Floor We don’t act like typical consultants, and we don’t want to be mistaken for them.” Source: RevenueBase Database · checked Sep 17, 2026
18	Powers	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 17, 2026	51-200	57 contacts →
	Indirect evidence “POWERS is an Atlanta-based management consulting firm that helps manufacturers and service operations convert strategy into measurable floor-level results.” Source: RevenueBase Database · checked Sep 17, 2026
19	Lean Enterprise Institute	Partial evidence	Boston, MA, United StatesHQ checked Sep 17, 2026	11-50	57 contacts →
	Partial evidence “The nonprofit Lean Enterprise Institute (LEI) helps companies and people make things better through lean thinking and practice.” Source: RevenueBase Database · checked Sep 17, 2026
20	Arista Consulting LLC	Indirect evidence	Canton, MI, United StatesHQ checked Sep 17, 2026	11-50	49 contacts →
	Indirect evidence “Your plant managers didn't sign up to fight software.” Source: RevenueBase Database · checked Sep 17, 2026
21	Allserv	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	43 contacts →
	Indirect evidence “At ALLSERV, we help companies reduce inventory costs, improve warehouse operations, and enhance asset availability through expert consulting and data-driven solutions.” Source: RevenueBase Database · checked Sep 17, 2026
22	Process Research & Optimization	Indirect evidence	Bonita Springs, FL, United StatesHQ checked Sep 17, 2026	51-200	42 contacts →
	Indirect evidence “Process Research & Optimization (PRO) is an international consulting firm dedicated to unlocking our clients’ growth potential and profitability through process innovation.” Source: RevenueBase Database · checked Sep 17, 2026
23	Tormod, A Hargrove Company	Partial evidence	Mobile, AL, United StatesHQ checked Sep 17, 2026	201-500	41 contacts →
	Partial evidence “Tormod exists to help manufacturing leaders run great plants.” Source: RevenueBase Database · checked Sep 17, 2026
24	CREAN	Indirect evidence	Austin, TX, United StatesHQ checked Sep 17, 2026	501-1,000	41 contacts →
	Indirect evidence “Headquartered in Austin, TX, our team provides Hands On Engineering Services and Smart Factory Transformation services to Fortune 100 and Fortune clients in these key areas…” Source: RevenueBase Database · checked Sep 17, 2026
25	Stroud International	Partial evidence	Marblehead, MA, United StatesHQ checked Sep 17, 2026	11-50	40 contacts →
	Partial evidence “Are you a manufacturing or operations leader who is tired of hearing excuses like these for a lack of tangible progress?” Source: RevenueBase Database · checked Sep 17, 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 manufacturing 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 lean manufacturing consultants.
Partial evidence: Its own public description names part of lean manufacturing consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name lean manufacturing 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 1,773 lean manufacturing consultants based in the United States

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Lean manufacturing consultants based in the United States at a glance

As of Sep 17, 2026

27.0%Verified-email coverage

5.1Average contacts per company

1-10Median size (employees)

2.4%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

1,436

11-50

258

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 1,773 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 manufacturing 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “lean manufacturing 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 lean manufacturing 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 lean manufacturing consultants, 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, 2,459 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 17, 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 manufacturing consultants 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 manufacturing 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 lean manufacturing consultants are there based in the United States?

RevenueBase identified 1,773 lean manufacturing consultants 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?

Okin Process, headquartered in San Antonio, tops this list with the largest team on record.

Which city has the most lean manufacturing consultants?

Houston leads with 43 headquartered companies, followed by Atlanta (40) and New York (35).

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 2,459 verified decision-maker contacts tracked across these 1,773 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 17, 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.