Company lists · Data refreshed September 2026
Top 25 Nonprofit advocacy law firms based in New York, United States
RevenueBase identified 83 nonprofit advocacy law firms headquartered in New York, United States as of September 2026 and tracks 1,054 professional contacts across them, including 591 with verified work emails. Across the United States, Washington is the largest hub for this category (133 companies); New York follows with 83.
This list covers nonprofit advocacy law firms 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 29, 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 nonprofit advocacy law firms based in New York, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 145 contacts → | ||||
Indirect evidence “At Sanford Heisler Sharp McKnight, our team of knowledgeable attorneys is committed to representing clients in their claims against powerful entities.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 135 contacts → | ||||
Partial evidence “At Hecker Fink LLP, we practice law at the highest level, guided by our core values of integrity, innovation, and excellence.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 88 contacts → | ||||
Partial evidence “Kasirer is NYC's #1 lobbying firm, navigating government on behalf of private sector & nonprofit clients.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 70 contacts → | ||||
Partial evidence “Founded in 2001, the International Legal Foundation is the leading global advocate for the right to counsel for the poor.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 47 contacts → | ||||
Indirect evidence “BFA's strength is in plaintiff-side complex litigation, including the prosecution of securities, antitrust, and consumer actions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 47 contacts → | ||||
Indirect evidence “We have fought for more than 40 years to protect civil rights and achieve lived equality for communities in need.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 46 contacts → | ||||
Partial evidence “Kaplan Fox is a leading national law firm focusing on complex litigation with offices in New York, San Francisco, Los Angeles, Chicago and New Jersey.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 44 contacts → | ||||
Indirect evidence “Perlman & Perlman is a dedicated team of attorneys united by a common mission: to make the world a better place.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 30 contacts → | ||||
Indirect evidence “NCLEJ was founded in 1965, in the heyday of the civil rights movement.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 20 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 20 contacts → | ||||
Indirect evidence “Representing Parents Of Students With Disabilities For More Than 35 Years Parents learn about their children's special education needs at all stages of life.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 20 contacts → | ||||
Strong evidence “Harnessing the power of Advocacy, Law, Politics & the Press.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 19 contacts → | ||||
Partial evidence “Mizrahi Kroub LLP is a full-service, plaintiff-side law firm based in New York City’s Financial District protecting the rights of employees, average consumers and disabled…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 12 contacts → | ||||
Indirect evidence “Gerstman PLLC is a New York based government relations firm committed to making a difference for those we represent.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 11 contacts → | ||||
Indirect evidence “Sanocki Newman & Turret LLP is a legal services company based out of 225 Broadway FL 8, New York, New York, United States.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 11 contacts → | ||||
Indirect evidence “FREE + FAIR develops and leads high-impact litigation to stop the advance of authoritarianism in the U.S.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 11 contacts → | ||||
Indirect evidence “Pollock Cohen LLP delivers unusually effective plaintiff-side legal representation to solve client problems.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 9 contacts → | ||||
Partial evidence “We are a full-service business law firm that represents and counsels our clients through every stage of their business journey with meticulous attention to detail and zealous…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 8 contacts → | ||||
Strong evidence “Good Counsel is dedicated to providing affordable access to legal advocacy to social entrepreneurs and new and emerging nonprofits through webinars, white papers, and one-on-one…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 8 contacts → | ||||
Partial evidence “A law firm for entrepreneurs and pioneers in business, education and not-for-profit ventures.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 7 contacts → | ||||
Partial evidence “At Kaplan Hecker & Fink LLP, we practice law at the highest level, guided by our core values of integrity, innovation, and excellence.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 7 contacts → | ||||
Indirect evidence “Wang Hecker LLP is one of the nation’s premier civil rights litigation boutiques.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 7 contacts → | ||||
Partial evidence “Urban Strategies LLC provides strategic planning, advocacy counsel and government affairs to major companies, non-profit organizations and cause-related efforts by building a…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 7 contacts → | ||||
Indirect evidence “Sheryl Menkes has been diligently defending the rights of the injured in Metropolitan New York for more than 30 years, and has a long track record of winning significant…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 6 contacts → | ||||
Partial evidence “Abbey Spanier, LLP is a nationally recognized law firm specializing in large, complex litigation in the fields of securities, mergers and acquisitions, corporate governance…” Source: RevenueBase Database · checked Sep 29, 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: nonprofit advocacy law 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 nonprofit advocacy law firms.
- Partial evidence
- Its own public description names part of nonprofit advocacy law firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name nonprofit advocacy law 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 83 nonprofit advocacy law firms based in New York, United States
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Nonprofit advocacy law firms based in New York, United States at a glance
As of Sep 29, 2026Companies by employee count
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 83 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 nonprofit advocacy law 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 New York, United States whose own description of what they do matches “nonprofit advocacy law 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 nonprofit advocacy law 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 nonprofit advocacy law firms, 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, 591 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 29, 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.
Nonprofit advocacy law firms by metro in the United States
- Nonprofit advocacy law firms in Washington133
- Nonprofit advocacy law firms in Chicago55
- Nonprofit advocacy law firms in Los Angeles46
- Nonprofit advocacy law firms in Denver36
- Nonprofit advocacy law firms in San Francisco34
- Nonprofit advocacy law firms in Atlanta30
- Nonprofit advocacy law firms in Sacramento29
- Nonprofit advocacy law firms in Dallas28
- Nonprofit advocacy law firms in Houston28
- Nonprofit advocacy law firms in San Diego28
- Nonprofit advocacy law firms in Boston26
- Nonprofit advocacy law firms in Minneapolis26
- Nonprofit advocacy law firms in Austin25
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 nonprofit advocacy law 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 nonprofit advocacy law firms are there based in New York, United States?
RevenueBase identified 83 nonprofit advocacy law firms 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?
Sanford Heisler Sharp Mcknight, LLP, headquartered in New York, tops this list with the largest team on record.
Which city in the United States has the most nonprofit advocacy law firms?
Washington leads the United States with 133 headquartered companies, followed by New York (83) and Chicago (55).
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 591 verified decision-maker contacts tracked across these 83 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 29, 2026.
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- Nonprofit advocacy law firms based in Houston, United States
- Nonprofit advocacy law firms based in Los Angeles, United States
- Nonprofit advocacy law firms based in Minneapolis, United States
- Nonprofit advocacy law firms based in Sacramento, United States
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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