Company lists · Data refreshed September 2026

Top 25 Big 5 consulting firms based in Columbus, United States

Name: Big 5 consulting firms based in Columbus, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 75 companies tracked

RevenueBase identified 75 big 5 consulting firms headquartered in Columbus, United States as of September 2026 and tracks 965 professional contacts across them, including 516 with verified work emails. Across the United States, New York is the largest hub for this category (587 companies); Columbus has 75.

This list covers big 5 consulting firms headquartered in Columbus, 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 23, 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 23, 2026 86% judged on-target in blind review

75Companies

965Contacts tracked

516Verified emails

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The 25 largest big 5 consulting firms based in Columbus, United States

Ranked by team size

Top 25 of 75 big 5 consulting firms based in Columbus, United States, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to big 5 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	AVAAP	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	201-500	416 contacts →
	Partial evidence “Avaap is a technology and management consulting firm that helps organizations modernize systems, transform processes, and drive meaningful outcomes.” Source: RevenueBase Database · checked Sep 23, 2026
2	Columbus Consulting International	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	51-200	134 contacts →
	Partial evidence “Columbus Consulting has been building trust within the retail and consumer goods markets for over two decades.” Source: RevenueBase Database · checked Sep 23, 2026
3	PSI Proteam Solutions	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	128 contacts →
	Partial evidence “Established in 1992, PSI (Proteam Solutions Inc) has grown from a one man start up to a multi-million dollar IT Consulting, Workforce Solutions and Enterprise Resource Solutions…” Source: RevenueBase Database · checked Sep 23, 2026
4	Fisher Management Partners	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	40 contacts →
	Partial evidence “Fisher Management Partners is a specialized consulting firm designed to address the unique needs of large and middle market businesses.” Source: RevenueBase Database · checked Sep 23, 2026
5	CCI Engineering Services	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	23 contacts →
	Partial evidence “In 1984, Joyce Johnson established CAD Concepts, Inc.(the CCI in CCI Engineering Services) as a consulting enterprise.” Source: RevenueBase Database · checked Sep 23, 2026
6	UPRYS	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	19 contacts →
	Indirect evidence “At UpRys, our focus is on elevating nonprofits and small-to-mid-sized businesses by delivering structure, strategy, and sustainable solutions.” Source: RevenueBase Database · checked Sep 23, 2026
7	Nanda Technologies	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	19 contacts →
	Partial evidence “Nanda Technologies can improve the competitiveness of clients through a set of consulting practices that result in knowledge-intensive business solutions with appropriate…” Source: RevenueBase Database · checked Sep 23, 2026
8	Haran, Watson & Company	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	1-10	8 contacts →
	Indirect evidence “The team at Haran, Watson & Company strives to meet your needs.” Source: RevenueBase Database · checked Sep 23, 2026
9	Betterchips Consulting Corp	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	1-10	6 contacts →
	Partial evidence “Betterchips Consulting is a globally-renowned firm that has built an ecosystem of trusted professionals across a wide range of computing technologies.” Source: RevenueBase Database · checked Sep 23, 2026
10	Digitist, LLC	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	1-10	6 contacts →
	Partial evidence “Digitist, LLC is a consulting company whose mission is to empower clients to identify and exploit strategic opportunities by leveraging web-based technologies to create lasting…” Source: RevenueBase Database · checked Sep 23, 2026
11	Think Rapid	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	1-10	5 contacts →
	Partial evidence “We are a boutique consulting firm known for swiftly providing customized solutions to clients.” Source: RevenueBase Database · checked Sep 23, 2026
12	Kensington Hill Partners	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	1-10	4 contacts →
	Indirect evidence “From start-up to mature, high-profile companies, Kensington Hill Partners supports all facets of executive leadership and Boards of Directors.” Source: RevenueBase Database · checked Sep 23, 2026
13	K2 Holdings, Inc. K2 Group	Partial evidence	Columbus, IN, United StatesHQ checked Sep 23, 2026	1-10	4 contacts →
	Partial evidence “The K2 Group is a consulting firm catering to commercial, non-government businesses.” Source: RevenueBase Database · checked Sep 23, 2026
14	Starks Consulting Group, LLC	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	1-10	4 contacts →
	Partial evidence “Founded in 2007, Starks Consulting Group is a premier IT Project Solutions firm located in Columbus, Ohio.” Source: RevenueBase Database · checked Sep 23, 2026
15	Loring Park	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	1-10	3 contacts →
	Indirect evidence “We are McKinsey-trained management focused on strategy, growth, and transformation.” Source: RevenueBase Database · checked Sep 23, 2026
16	Next Step Business Consulting	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	1-10	3 contacts →
	Indirect evidence “Leave the Implementation to Me.” Source: RevenueBase Database · checked Sep 23, 2026
17	Beek Consulting, LTD	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	1-10	2 contacts →
	Partial evidence “Beek Consulting, LTD is a Professional Services and Management Consulting Firm located in Columbus, OH.” Source: RevenueBase Database · checked Sep 23, 2026
18	Connexxion Consulting LLC	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	1-10	2 contacts →
	Partial evidence “Connexxion Consulting provides management consulting services to improve business agility, increase visibility of opportunities and issues, and strengthen top-line and bottom-line…” Source: RevenueBase Database · checked Sep 23, 2026
19	HT Infotech	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	2 contacts →
	Partial evidence “A leading technology consulting firm redefining strategic digital transformation.” Source: RevenueBase Database · checked Sep 23, 2026
20	Bond Management Consulting Services, LLC	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	1-10	2 contacts →
	Partial evidence “Welcome to Bond Management Consulting Services, where passion for people, processes, and business unite to strengthen and improve organizational performance.” Source: RevenueBase Database · checked Sep 23, 2026
21	Gleckner, LLC	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	1-10	1 contacts →
	Partial evidence “Gleckner, LLC specializes in consulting services to small and large businesses, primarily in the field of digital commerce, operations and information technology management-…” Source: RevenueBase Database · checked Sep 23, 2026
22	Adam M Ward	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	1-10	1 contacts →
	Partial evidence “Offers a variety of consulting services.” Source: RevenueBase Database · checked Sep 23, 2026
23	RD Management Consulting INC	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	1-10	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 23, 2026
24	Partners In Results	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	1-10	1 contacts →
	Partial evidence “PARTNERS IN RESULTS provides finance / accounting and management consulting services to organizations or teams that need an upgrade.” Source: RevenueBase Database · checked Sep 23, 2026
25	Human Performance Engineering, LLC	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	1-10	1 contacts →
	Partial evidence “Human Performance Engineering, LLC is a management consulting company based in Columbus, Ohio.” Source: RevenueBase Database · checked Sep 23, 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: big 5 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 big 5 consulting firms.
Partial evidence: Its own public description names part of big 5 consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name big 5 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 75 big 5 consulting firms based in Columbus, United States

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Big 5 consulting firms based in Columbus, United States at a glance

As of Sep 23, 2026

53.5%Verified-email coverage

12.9Average contacts per company

1-10Median size (employees)

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Columbus, so it is reported there. Company counts and contact totals on this page are exact for Columbus, over 75 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 big 5 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 Columbus, United States whose own description of what they do matches “big 5 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 big 5 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 big 5 consulting firms, and records with no verified work email. Companies headquartered outside Columbus 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, 516 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 23, 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.

Big 5 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 big 5 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 big 5 consulting firms are there based in Columbus, United States?

RevenueBase identified 75 big 5 consulting firms headquartered in Columbus, 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?

AVAAP, headquartered in Columbus, tops this list with the largest team on record.

Which city in the United States has the most big 5 consulting firms?

New York leads the United States with 587 headquartered companies, followed by Chicago (350) and Atlanta (336). Columbus has 75.

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 516 verified decision-maker contacts tracked across these 75 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 23, 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.