Company lists · Data refreshed September 2026

Top 25 Lean consulting firms based in Chicago, United States

Name: Lean consulting firms based in Chicago, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 97 companies tracked

RevenueBase identified 97 lean consulting firms headquartered in Chicago, United States as of September 2026 and tracks 1,433 professional contacts across them, including 568 with verified work emails. Atlanta is the largest hub.

This list covers lean consulting firms headquartered in Chicago, 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 14, 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 14, 2026 86% judged on-target in blind review

97Companies

1,433Contacts tracked

568Verified emails

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The 25 largest lean consulting firms based in Chicago, United States

Ranked by team size

Top 25 of 97 lean consulting firms based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to lean 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	DLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	201-500	546 contacts →
	Partial evidence “DLC is an award-winning industry leader in Finance, Accounting, Program Management & Process Improvement Consulting.” Source: RevenueBase Database · checked Sep 14, 2026
2	Skender	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	201-500	275 contacts →
	Indirect evidence “The premier construction experience.” Source: RevenueBase Database · checked Sep 14, 2026
3	CGN Global	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	201-500	104 contacts →
	Partial evidence “A Chicago-based firm with offices in Mexico, the UK, France, Turkey, India, and China, providing supply chain, digital, strategy and transformation consulting services to…” Source: RevenueBase Database · checked Sep 14, 2026
4	The Keystone Group	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	11-50	63 contacts →
	Partial evidence “The Keystone Group is a results-oriented management consulting firm.” Source: RevenueBase Database · checked Sep 14, 2026
5	Voyage Advisory	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	11-50	33 contacts →
	Indirect evidence “Voyage’s team of management consultants work side-by-side with leaders to achieve their top objectives and solve their toughest problems.” Source: RevenueBase Database · checked Sep 14, 2026
6	Partnersolve LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	11-50	14 contacts →
	Partial evidence “PartnerSolve LLC, founded in 2001, is a management consulting firm focused on accelerating performance within their clients with an emphasis on front and back-office operations.” Source: RevenueBase Database · checked Sep 14, 2026
7	Sagin, LLC	Indirect evidence	Chicago, United StatesHQ checked Sep 14, 2026	51-200	13 contacts →
	Indirect evidence “We help companies grow, change and create measurable results.” Source: RevenueBase Database · checked Sep 14, 2026
8	Lake Shore Associates, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	11-50	13 contacts →
	Partial evidence “Lake Shore Associates (LSA) is a certified woman-owned management consulting firm that provides strategic, unbiased, and objective advisory and delivery services to improve an…” Source: RevenueBase Database · checked Sep 14, 2026
9	Proper Consulting Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	11-50	12 contacts →
	Indirect evidence “Proper leverages its expertise, data analytics, and market intelligence to identify cost reduction opportunities, and then partners with its clients to implement those…” Source: RevenueBase Database · checked Sep 14, 2026
10	Gillum Strategy Partners	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	1-10	10 contacts →
	Partial evidence “Gillum Strategy Partners is a boutique management consulting firm with a focus on the creation and execution of strategies that deliver demonstrable value.” Source: RevenueBase Database · checked Sep 14, 2026
11	Zenza Consulting	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	1-10	7 contacts →
	Partial evidence “Zenza Consulting focuses on innovation and execution at the intersection of strategy, operations, technology, data, analytics, talent and finance to help you identify and unlock…” Source: RevenueBase Database · checked Sep 14, 2026
12	Vitalizing Business Solutions INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	1-10	7 contacts →
	Partial evidence “Vitalizing Business Solutions offers a wide range of consulting services with the necessary tools and expertise to help grow your business.” Source: RevenueBase Database · checked Sep 14, 2026
13	Treasury Advisors Group	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	1-10	6 contacts →
	Partial evidence “With decades of experience in consulting, TAG has developed a wide range of capabilities to support your needs.” Source: RevenueBase Database · checked Sep 14, 2026
14	Bumper Lanes	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	1-10	6 contacts →
	Indirect evidence “Helping companies and people become better versions of themselves through marketing strategy, messaging, and focusing on constant improvement to people, process, product, and…” Source: RevenueBase Database · checked Sep 14, 2026
15	Archer NSG	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	11-50	5 contacts →
	Partial evidence “Archer’s consulting teams work closely with law firm and fortune 500 COOs, CIOs and practice managers to design practical, effective processes and support solutions that provide…” Source: RevenueBase Database · checked Sep 14, 2026
16	Kairos Worldwide	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	1-10	5 contacts →
	Partial evidence “Kairos Worldwide is a proven leader in process engineering consulting and is dedicated to reducing waste and enabling robust, sustainable growth for all types of clients.” Source: RevenueBase Database · checked Sep 14, 2026
17	The Systems Effect	Indirect evidence	Chicago, United StatesHQ checked Sep 14, 2026	11-50	4 contacts →
	Indirect evidence “The System Effect helps businesses streamline operations, improve efficiency, and achieve sustainable growth through process mapping, workflow optimization, and creating clear…” Source: RevenueBase Database · checked Sep 14, 2026
18	Coleman Group Consulting, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	11-50	4 contacts →
	Partial evidence “Coleman Group is a management consulting firm with specific expertise in strategic sourcing, which helps organizations create savings and improve operations.” Source: RevenueBase Database · checked Sep 14, 2026
19	Chelwood Consulting Group	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	1-10	4 contacts →
	Partial evidence “Chelwood Consulting Group specializes in Business Consulting for manufacturers, warehouses and distributors.” Source: RevenueBase Database · checked Sep 14, 2026
20	BEN Jacobson Consultants	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	1-10	4 contacts →
	Indirect evidence “Ben Jacobson Consultants was founded in 2001 and has been helping businesses operate with maximum efficiency ever since.” Source: RevenueBase Database · checked Sep 14, 2026
21	Cameo Consulting	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	1-10	4 contacts →
	Indirect evidence “We understand that each client faces unique challenges that do not fit a “cookie-cutter” solution.” Source: RevenueBase Database · checked Sep 14, 2026
22	Tenet Consulting	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	11-50	3 contacts →
	Partial evidence “Tenet Consulting is a Chicago based Management Consulting firm that focuses on principal based consulting in areas of Strategic Sourcing, Logistics, and Operational Excellence.” Source: RevenueBase Database · checked Sep 14, 2026
23	Arcy Adele	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	1-10	3 contacts →
	Partial evidence “We are a tech and operations consulting agency- Now operating a CEO Quick Launch Our company’s competitive edge is our combination of sales strategy, supply chain/operations, and…” Source: RevenueBase Database · checked Sep 14, 2026
24	JLEAN	Partial evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	1-10	2 contacts →
	Partial evidence “We are the United States’ most experienced practitioners of the Lean method.” Source: RevenueBase Database · checked Sep 14, 2026
25	DNA Consulting Group, LLC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	1-10	2 contacts →
	Indirect evidence “We help companies become more productive.” Source: RevenueBase Database · checked Sep 14, 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 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 lean consulting firms.
Partial evidence: Its own public description names part of lean consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name lean 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 97 lean consulting firms based in Chicago, United States

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Lean consulting firms based in Chicago, United States at a glance

As of Sep 14, 2026

39.6%Verified-email coverage

14.8Average contacts per company

1-10Median size (employees)

126.8%Largest-city concentration · Atlanta

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 97 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 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 Chicago, United States whose own description of what they do matches “lean 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 lean 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 lean consulting firms, and records with no verified work email. Companies headquartered outside Chicago 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, 568 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 14, 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 consulting firms by metro in the United States

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 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 lean consulting firms are there based in Chicago, United States?

RevenueBase identified 97 lean consulting firms headquartered in Chicago, 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?

DLC, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most lean consulting firms?

Atlanta leads with 123 headquartered companies, followed by Houston (113) and New York (113).

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 568 verified decision-maker contacts tracked across these 97 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 14, 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.