Company lists · Data refreshed September 2026

Top 25 Consulting companies based in New York, United States

This directory lists 3,033 consulting companies based in New York, United States, with 125,746 business contacts and 55,608 email addresses. Updated September 2026, it identifies New York as the single most-represented city among the companies on the list.

Consulting companies provide expert advice, analysis, and implementation support to organizations in areas such as management, operations, technology, finance, or specialized industries. This list covers companies that provide consulting services to organizational clients, including general management, operational, technical, financial, and industry-specific advisory services. Ranked by team size, largest first. Data current as of September 8, 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 8, 2026 86% judged on-target in blind review
3,033Companies
125,746Contacts tracked
55,608Verified emails
26,789Mobile numbers
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The 25 largest consulting companies based in New York, United States

Ranked by team size
Top 25 of 3,033 consulting companies based in New York, United States, ranked by team size, largest first. Data refreshed Sep 8, 2026. RevenueBase Smart Search rates how each company's information relates to consulting companies: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceNew York, NY, United StatesHQ checked Sep 8, 202610001+40,100 contacts →

“Choosing a digital partner is about more than capabilities, it’s about collaboration and character.”

Source: company website · checked Sep 8, 2026
2Indirect evidenceNew York, NY, United StatesHQ checked Sep 8, 202610001+13,099 contacts →

“Alvarez & Marsal is a leading global professional services firm dedicated to helping organizations tackle their most complex business issues, maximize stakeholder value, and…”

Source: company website · checked Sep 8, 2026
3Indirect evidenceNew York, NY, United StatesHQ checked Sep 8, 202610001+9,318 contacts →

“What if you could shape built and natural environments – and the future of those that use them?”

Source: company website · checked Sep 8, 2026
4Indirect evidenceNew York, NY, United StatesHQ checked Sep 8, 20265,001-10,0008,230 contacts →

“At Oliver Wyman, a Marsh business, we bring deep industry insight, bold innovation, and a collaborative approach that cuts through complexity to help organizations navigate their…”

Source: company website · checked Sep 8, 2026
5Indirect evidenceNew York, NY, United StatesHQ checked Sep 8, 20265,001-10,0008,037 contacts →

“We are your global partner in tech-integrated business solutions, turning AI ambition into measurable business impact.”

Source: company website · checked Sep 8, 2026
6Indirect evidenceNew York, NY, United StatesHQ checked Sep 8, 20261,001-5,0005,082 contacts →

“From strategy to execution.”

Source: company website · checked Sep 8, 2026
7Strong evidenceNew York, NY, United StatesHQ checked Sep 8, 20261,001-5,0004,199 contacts →

“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: company website · checked Sep 8, 2026
8Indirect evidenceNew York, NY, United StatesHQ checked Sep 8, 20261,001-5,0003,583 contacts →

“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: company website · checked Sep 8, 2026
9Indirect evidenceNew York, NY, United StatesHQ checked Sep 8, 20261,001-5,0002,100 contacts →

“As Hazen marks 75 years, we celebrate a legacy of absolute commitment to our clients while delivering the best technical work available anywhere.”

Source: company website · checked Sep 8, 2026
10Strong evidenceNew York, NY, United StatesHQ checked Sep 8, 20261,001-5,0002,035 contacts →

“UHY is one of the nation’s largest professional services firms providing audit, tax, consulting and advisory services to clients primarily in the dynamic middle market.”

Source: company website · checked Sep 8, 2026
11Indirect evidenceNew York, NY, United StatesHQ checked Sep 8, 2026501-1,000883 contacts →

“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: company website · checked Sep 8, 2026
12Indirect evidenceNew York, United StatesHQ checked Sep 8, 2026501-1,000803 contacts →

“Consult Engineer Commission At Syska Hennessy Group, we create exceptional environments.”

Source: company website · checked Sep 8, 2026
13Strong evidenceNew York, NY, United StatesHQ checked Sep 8, 2026501-1,000765 contacts →

“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: company website · checked Sep 8, 2026
14Strong evidenceNew York, United StatesHQ checked Sep 8, 2026201-500467 contacts →

“Prager Metis CPAs is an independent, full service, public accounting and consulting firm.”

Source: company website · checked Sep 8, 2026
15Strong evidenceNew York, NY, United StatesHQ checked Sep 8, 2026201-500423 contacts →

“Keystone is an innovative strategy, economics, and technology consulting firm delivering transformative ideas and novel solutions to global brands and law firms on leading-edge…”

Source: company website · checked Sep 8, 2026
16Indirect evidenceNew York, NY, United StatesHQ checked Sep 8, 20261,001-5,000351 contacts →

“ICS, a Korn Ferry Company, is one of the nation’s leading staffing and recruiting companies specializing in connecting talented people to the businesses who need them.”

Source: company website · checked Sep 8, 2026
17Indirect evidenceNew York, NY, United StatesHQ checked Sep 8, 2026201-500337 contacts →

“At Phronesis Partners, we turn complexity into clarity for the world's leading organizations.”

Source: company website · checked Sep 8, 2026
18Indirect evidenceNew York, NY, United StatesHQ checked Sep 8, 2026201-500336 contacts →

“Roko Labs is an AI-native engineering partner for enterprises.”

Source: company website · checked Sep 8, 2026
19Strong evidenceNew York, NY, United StatesHQ checked Sep 8, 2026201-500326 contacts →

“Ranosys is a global digital consulting company helping enterprises accelerate growth through AI, Digital Commerce, Digital Transformation, and Product Engineering.”

Source: company website · checked Sep 8, 2026
20Indirect evidenceNew York, NY, United StatesHQ checked Sep 8, 202651-200322 contacts →

“Atlas Search is an executive recruiting firm dedicated to placing accounting, finance, front office, middle office, technology, healthcare, clinical research, human resources, and…”

Source: company website · checked Sep 8, 2026
21Indirect evidenceNew York, NY, United StatesHQ checked Sep 8, 20261,001-5,000314 contacts →

“As one of the fastest-growing scheduling, project controls, and project management corporations in the United States, we offer reliable construction planning at an…”

Source: company website · checked Sep 8, 2026
22Indirect evidenceNew York, NY, United StatesHQ checked Sep 8, 2026n/a292 contacts →

“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: company website · checked Sep 8, 2026
23Strong evidenceNew York, NY, United StatesHQ checked Sep 8, 20265,001-10,000289 contacts →

“Volt is a global provider of talent, technology and consulting services.”

Source: company website · checked Sep 8, 2026
24Indirect evidenceNew York, NY, United StatesHQ checked Sep 8, 2026501-1,000276 contacts →

“Seargin was founded to close the gap between traditional advisory and hands-on delivery - combining strategic insight with deep expertise in ERP, AI and data.”

Source: company website · checked Sep 8, 2026
25Indirect evidenceNew York, NY, United StatesHQ checked Sep 8, 202651-200262 contacts →

“2025 Best of Staffing® Client Winner • 4.8/5 Client Rating (n=73) Staffing Solutions in Technology, Finance, Legal, and Accounting Serving Fortune 100 to High-Growth Firms Across…”

Source: company website · checked Sep 8, 2026

Showing 25 of 3,033 consulting companies based in New York, United States

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Consulting companies based in New York, United States at a glance

As of Sep 8, 2026
44.2%Verified-email coverage
21.3%Mobile-number coverage
41.5Average contacts per company
1-10Median size (employees)
100.0%Largest-city concentration · New York
Sep 8, 2026Page data refreshed

Companies by employee count

1-10
2,011
11-50
715
51-200
198
201-500
56
501-1,000
17
1,001-5,000
18
5,001-10,000
3
10001+
11

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 11.0d

Company record updated

Median 59.0d

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 consulting companies, 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 “consulting companies”. 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 consulting companies), 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 consulting companies, 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, 55,608 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 8, 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.

Frequently asked

How many consulting companies are based in New York, United States?

The list contains 3,033 consulting companies based in New York, United States.

Which city has the most consulting companies on the list?

New York is the single most-represented city among the consulting companies on the list.

How can I find contacts at consulting companies?

The directory includes 125,746 business contacts and 55,608 email addresses for the listed consulting companies.

Ready to reach these companies? Verified emails and direct dials for all 3,033 consulting companies based in New York, United States. Start with a free account, no credit card.

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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.