Company lists · Data refreshed September 2026
Top 25 Big consulting firms based in Mclean, United States
RevenueBase identified 56 big consulting firms headquartered in Mclean, United States as of September 2026 and tracks 14,639 professional contacts across them, including 6,308 with verified work emails. New York is the largest hub.
This list covers big consulting firms headquartered in Mclean, 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 21, 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.
The 25 largest big consulting firms based in Mclean, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 12,815 contacts → | ||||
Indirect evidence “Guidehouse is a global AI-led professional services firm delivering advisory, technology, and managed services to the commercial and government sectors.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 399 contacts → | ||||
Partial evidence “Based in McLean, Va, Attain Partners is a leading management and technology consulting firm delivering services and solutions to advance client missions across the education…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 224 contacts → | ||||
Partial evidence “ValidaTek is a premier government IT consulting firm based in the Washington DC area that drives technology transformation and secures mission-critical systems for our federal…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 175 contacts → | ||||
Indirect evidence “Clients choose Acumen Solutions, a Salesforce Company, for one simple reason: our experience delivers success.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 153 contacts → | ||||
Indirect evidence “Integral partners with federal defense, intelligence, and civilian leaders to tackle their most important challenges and deliver transformative solutions.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 47 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 47 contacts → | ||||
Partial evidence “McBride Consulting, LLC,(dba McBride) is a minority and Service-Disabled Veteran-Owned Small Business (SDVOSB) management consulting and project management firm with significant…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 36 contacts → | ||||
Partial evidence “Founded in 2010, Creative Systems and Consulting, LLC, has been at the forefront of Digital Transformation across Federal Government, driving innovation, ingenuity, and industry…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 32 contacts → | ||||
Indirect evidence “Some missions can't fail.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 28 contacts → | ||||
Partial evidence “Leading Path is an award-winning, minority, woman-owned (NMSDC / MBE) technology consulting company that brings our clients top talent and creative solutions.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 23 contacts → | ||||
Partial evidence “Stratitia is a customer-driven professional services and management consulting firm offering strategic consulting, operational support, logistics and technology enablement to…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 22 contacts → | ||||
Indirect evidence “GBTI Solutions, Inc.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 20 contacts → | ||||
Partial evidence “Syed and Associates is a global consulting firm that partners with leaders in the public, private, and social sectors to make informed decisions and turn them into actionable…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 19 contacts → | ||||
Partial evidence “Lapine Group is a women-owned management consulting firm leveraging customer-centric strategy, design, and technology to develop and deploy solutions for companies in the…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 19 contacts → | ||||
Partial evidence “Award-winning, woman-owned management consulting firm supporting the Federal, state, and local governments across the U.S.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 18 contacts → | ||||
Partial evidence “Sunrays International is a globally-integrated consulting, program management and shared services provider.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 17 contacts → | ||||
Indirect evidence “SkySoft, INC is a Small, Women-owned and Minority-owned Business (SWaM) certified company based in VA and we are in Information Technology & Management Consultancy founded by Team…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 16 contacts → | ||||
Indirect evidence “Waditek specializes in transforming staid business practices for our clients by putting digital transformation into practice.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 16 contacts → | ||||
Partial evidence “TechnaLink is a leading woman- and minority-owned IT services and management consulting provider located in the Washington, DC, area.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 13 contacts → | ||||
Partial evidence “AXIS Management Group (AXIS) is a fast-growing consulting services company offering integrated IT, scientific, and strategic solutions for the Federal Government, large…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 10 contacts → | ||||
Partial evidence “Fuel Consulting, LLC is an elite management-consulting firm specializing in powering organizational change in demanding times in the federal, nonprofit, and commercial sectors.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 9 contacts → | ||||
Partial evidence “OmniTek Consulting is a boutique consulting firm specializing in providing business management and technological services to the Life Sciences and Government sectors.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 6 contacts → | ||||
Partial evidence “A management consulting services firm that provides advisory services to federal and commercial clients.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 6 contacts → | ||||
Partial evidence “VRTL Space is a preeminent management and technology consulting firm in the Washington, DC metro area.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 5 contacts → | ||||
Partial evidence “Opus Group, LLC is an award-winning Small Business Administration (SBA) certified 8(a) firm that provides management and technology consulting services in the areas of customer…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
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 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 consulting firms.
- Partial evidence
- Its own public description names part of big 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 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 56 big consulting firms based in Mclean, United States
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Big consulting firms based in Mclean, United States at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Mclean, so it is reported there. Company counts and contact totals on this page are exact for Mclean, over 56 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 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 Mclean, United States whose own description of what they do matches “big 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 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 consulting firms, and records with no verified work email. Companies headquartered outside Mclean 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, 6,308 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 21, 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 consulting firms by metro in the United States
- Big consulting firms in New York303
- Big consulting firms in Washington224
- Big consulting firms in Chicago195
- Big consulting firms in Atlanta193
- Big consulting firms in Houston157
- Big consulting firms in Dallas120
- Big consulting firms in Miami111
- Big consulting firms in Los Angeles100
- Big consulting firms in San Francisco88
- Big consulting firms in Austin86
- Big consulting firms in Arlington82
- Big consulting firms in Boston78
- Big consulting firms in Denver77
- Big consulting firms in Seattle75
- Big consulting firms in San Diego65
- Big consulting firms in Minneapolis61
- Big consulting firms in Reston60
- Big consulting firms in Charlotte56
- Big consulting firms in Mclean56
- Big consulting firms in Alexandria52
- Big consulting firms in Tampa51
- Big consulting firms in Fairfax46
- Big consulting firms in Phoenix43
- Big consulting firms in Portland42
- Big consulting firms in Philadelphia41
- Big consulting firms in Irvine40
- Big consulting firms in Columbus39
- Big consulting firms in Sacramento38
- Big consulting firms in Orlando36
- Big consulting firms in Vienna35
- Big consulting firms in Herndon34
- Big consulting firms in Las Vegas34
- Big consulting firms in Rockville34
- Big consulting firms in Bethesda33
- Big consulting firms in Alpharetta31
- Big consulting firms in Ashburn31
- Big consulting firms in Frisco31
- Big consulting firms in New York City31
- Big consulting firms in Indianapolis30
- Big consulting firms in Plano30
- Big consulting firms in Raleigh30
- Big consulting firms in San Antonio30
- Big consulting firms in Irving29
- Big consulting firms in Jacksonville29
- Big consulting firms in Bellevue28
- Big consulting firms in Baltimore27
- Big consulting firms in Cincinnati27
- Big consulting firms in Cleveland27
- Big consulting firms in Leesburg26
- Big consulting firms in Nashville26
- Big consulting firms in Fort Lauderdale25
- Big consulting firms in Richmond25
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 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 consulting firms are there based in Mclean, United States?
RevenueBase identified 56 big consulting firms headquartered in Mclean, 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?
Guidehouse, headquartered in Mclean, tops this list with the largest team on record.
Which city has the most big consulting firms?
New York leads with 303 headquartered companies, followed by Washington (224) and Chicago (195).
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 6,308 verified decision-maker contacts tracked across these 56 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 21, 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.
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