Company lists · Data refreshed September 2026

Top 25 Consultancy services based in New York, United States

Name: Consultancy services based in New York, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 2,050 companies tracked

RevenueBase identified 2,050 consultancy services headquartered in New York, United States as of September 2026 and tracks 42,492 professional contacts across them, including 24,074 with verified work emails. Across the United States, New York is the largest hub for this category.

This list covers consultancy services headquartered in New York, 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 24, 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 24, 2026 86% judged on-target in blind review

2,050Companies

42,492Contacts tracked

24,074Verified emails

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The 25 largest consultancy services based in New York, United States

Ranked by team size

Top 25 of 2,050 consultancy services based in New York, United States, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to consultancy services: 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	Alvarez & Marsal	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	10001+	13,099 contacts →
	Indirect evidence “Alvarez & Marsal is a leading global professional services firm dedicated to helping organizations tackle their most complex business issues, maximize stakeholder value, and…” Source: RevenueBase Database · checked Sep 24, 2026
2	Strategy	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	1,001-5,000	5,082 contacts →
	Indirect evidence “From strategy to execution.” Source: RevenueBase Database · checked Sep 24, 2026
3	Eisneramper	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	1,001-5,000	4,199 contacts →
	Indirect evidence “EisnerAmper, one of the largest business consulting firms in the world, is comprised of EisnerAmper LLP, a licensed independent CPA firm that provides client attest services; and…” Source: RevenueBase Database · checked Sep 24, 2026
4	Alixpartners	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	1,001-5,000	3,583 contacts →
	Indirect evidence “For more than forty years, AlixPartners has helped businesses around the world respond quickly and decisively to their most critical challenges – circumstances as diverse as…” Source: RevenueBase Database · checked Sep 24, 2026
5	Cumming Group	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,612 contacts →
	Indirect evidence “At Cumming Group, we are passionate about helping our clients execute large-scale, complex projects on time and within budget.” Source: RevenueBase Database · checked Sep 24, 2026
6	Perella Weinberg	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	501-1,000	883 contacts →
	Indirect evidence “Perella Weinberg is a leading global independent financial services firm, founded in 2006 to address the need for experienced, trusted and unconflicted advice in the financial…” Source: RevenueBase Database · checked Sep 24, 2026
7	The Vertex Companies LLC	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	501-1,000	765 contacts →
	Indirect evidence “The Vertex Companies, LLC is a global consulting firm that provides strategic advisory, project management, and dispute resolution services for organizations that face complex…” Source: RevenueBase Database · checked Sep 24, 2026
8	Sodali & CO	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	501-1,000	431 contacts →
	Indirect evidence “Sodali & Co advises corporate clients worldwide as they navigate the complex dynamic of shareholder and stakeholder interests.” Source: RevenueBase Database · checked Sep 24, 2026
9	Roko Labs	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	201-500	336 contacts →
	Indirect evidence “Roko Labs is an AI-native engineering partner for enterprises.” Source: RevenueBase Database · checked Sep 24, 2026
10	Industri	Strong evidence	New York, NY, United StatesHQ checked Sep 24, 2026	n/a	292 contacts →
	Strong evidence “Construction Sector/B2B Brand Strategy, Marketing & Business Development INDUSTRI® is a multi-faceted business development consultancy that focuses on key areas of an organization…” Source: RevenueBase Database · checked Sep 24, 2026
11	ZEN & ART	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	501-1,000	236 contacts →
	Indirect evidence “Zen & Art is a group of talented and experienced technologists and business practitioners who recognize the need for a simplistic approach amidst mass disruption.” Source: RevenueBase Database · checked Sep 24, 2026
12	Horwath HTL	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	201-500	198 contacts →
	Indirect evidence “Bold steps forward.” Source: RevenueBase Database · checked Sep 24, 2026
13	Bryant Park Consulting	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	201-500	191 contacts →
	Indirect evidence “We champion a culture of innovation to help our clients build the future of business.” Source: RevenueBase Database · checked Sep 24, 2026
14	Research Nester Analytics	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	51-200	191 contacts →
	Indirect evidence “Research Nester is a global consulting firm that works with the most aspirational facilitators to define the future market strategies.” Source: RevenueBase Database · checked Sep 24, 2026
15	Sharp Decisions	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	201-500	171 contacts →
	Indirect evidence “For over 33 years, Sharp Decisions Inc.” Source: RevenueBase Database · checked Sep 24, 2026
16	NEO Tangent Limited	Indirect evidence	New York, United StatesHQ checked Sep 24, 2026	1,001-5,000	167 contacts →
	Indirect evidence “We're a business process management organization that delivers professional services to our customers globally.” Source: RevenueBase Database · checked Sep 24, 2026
17	Cedar Management Consulting International	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	51-200	155 contacts →
	Indirect evidence “Cedar is a global strategy consulting, research, & analytics firm with a 35-year track record & clients across multiple industry sectors.” Source: RevenueBase Database · checked Sep 24, 2026
18	Evergreen Trading	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	51-200	151 contacts →
	Indirect evidence “Evergreen Trading delivers financial solutions to complex business challenges, turning unused business assets and balance-sheet liabilities into marketing opportunities, funding…” Source: RevenueBase Database · checked Sep 24, 2026
19	ITAC	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	n/a	150 contacts →
	Indirect evidence “ITAC is a leading consulting organization located in New York City.” Source: RevenueBase Database · checked Sep 24, 2026
20	Applied Value Group	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 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 24, 2026
21	Tefen Management Consulting	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	201-500	122 contacts →
	Indirect evidence “Tefen is an international management consulting firm, committed to driving organizations towards achieving performance excellence.” Source: RevenueBase Database · checked Sep 24, 2026
22	RF Binder	Strong evidence	New York, NY, United StatesHQ checked Sep 24, 2026	51-200	122 contacts →
	Strong evidence “RF\|Binder is a fully integrated communications agency and consultancy that aligns communications and business strategy to achieve results.” Source: RevenueBase Database · checked Sep 24, 2026
23	KC Engineering And Land Surveying, P.C	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	51-200	120 contacts →
	Indirect evidence “KC is a diversified, multi-disciplined consulting engineering firm.” Source: RevenueBase Database · checked Sep 24, 2026
24	Vested	Strong evidence	New York, NY, United StatesHQ checked Sep 24, 2026	51-200	111 contacts →
	Strong evidence “Vested is a world-leading integrated marketing and communications consultancy focused exclusively on the financial services industry.” Source: RevenueBase Database · checked Sep 24, 2026
25	Next Street	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	51-200	85 contacts →
	Indirect evidence “For more than 20 years, corporations, governments, and philanthropies have hired Next Street to strengthen the small businesses they rely on.” Source: RevenueBase Database · checked Sep 24, 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: consultancy services. 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 consultancy services.
Partial evidence: Its own public description names part of consultancy services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name consultancy services. 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 2,050 consultancy services based in New York, United States

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Consultancy services based in New York, United States at a glance

As of Sep 24, 2026

56.7%Verified-email coverage

20.7Average contacts per company

1-10Median size (employees)

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

1,506

11-50

405

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than for New York, so it is reported there. Company counts and contact totals on this page are exact for New York, over 2,050 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 consultancy services, 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 New York, United States whose own description of what they do matches “consultancy services”. 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 consultancy services), 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 consultancy services, and records with no verified work email. Companies headquartered outside New York 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, 24,074 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 24, 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.

Consultancy services 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 consultancy services, 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 consultancy services are there based in New York, United States?

RevenueBase identified 2,050 consultancy services headquartered in New York, 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?

Alvarez & Marsal, headquartered in New York, tops this list with the largest team on record.

Which city in the United States has the most consultancy services?

New York leads the United States with 2,050 headquartered companies, followed by Atlanta (961) and Chicago (961).

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 24,074 verified decision-maker contacts tracked across these 2,050 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 24, 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.