Company lists · Data refreshed September 2026

Top 25 International nonprofit consultants based in the United States

Name: International nonprofit consultants based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 3,874 companies tracked

RevenueBase identified 3,874 company matches for international nonprofit consultants associated with the United States as of September 2026 and tracks 23,973 professional contacts across them, including 8,199 with verified work emails. New York is the largest hub.

This list covers company matches for international nonprofit consultants associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 28, 2026 How this list was built

3,874Companies

23,973Contacts tracked

8,199Verified emails

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The 25 largest international nonprofit consultants based in the United States

Ranked by team size

Top 25 of 3,874 company matches for international nonprofit consultants based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	CCS Fundraising	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	501-1,000	728 contacts →
	Exact match “For over 75 years, CCS Fundraising has empowered many of the world’s greatest organizations to advance some of the most important causes in history.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	Global Research And Consulting Group	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	643 contacts →
	Exact match “GRC Group (Global Research & Consulting) is a 501(c)(3) nonprofit with over active students from various cultural and academic backgrounds.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	FSG	Exact match	Boston, MA, United StatesHQ recorded Sep 28, 2026	51-200	517 contacts →
	Exact match “At FSG, we are a global nonprofit consulting firm committed to advancing equitable systems change.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	The Bridgespan Group	Exact match	Boston, MA, United StatesHQ recorded Sep 28, 2026	201-500	443 contacts →
	Exact match “The Bridgespan Group is a global nonprofit that strives to make the world more equitable and just.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Nonprofit Hr, Powered By Onedigital	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	10001+	300 contacts →
	Exact match “Nonprofit HR was founded with one goal in mind: to strengthen the social impact sector by strengthening its people.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	JCA	Exact match	Chicago, IL, United StatesHQ recorded Sep 28, 2026	n/a	265 contacts →
	Exact match “JCA is the first and foremost independent consulting firm dedicated to addressing the technology and operational needs of nonprofits.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	SSA Consultants	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 28, 2026	n/a	258 contacts →
	Exact match “We are partners and advisors of leading organizations and governments, bound to and inspired by a mission of helping our clients improve their performance.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	TCC Group	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	n/a	232 contacts →
	Exact match “TCC Group collaborates with leaders to solve complex social problems.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Arabella Advisors	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	201-500	227 contacts →
	Exact match “Arabella Advisors is a professional services firm that provides administrative, operational, and strategic support to nonprofits, foundations, and individual donors.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Near East Foundation	Exact match	Syracuse, NY, United StatesHQ recorded Sep 28, 2026	51-200	220 contacts →
	Exact match “Near East Foundation is a global leader and trusted partner, bringing international expertise, innovative programs and long-term commitment to conflict and crisis-affected…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Nonprofit Finance Fund	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	51-200	212 contacts →
	Exact match “Financing for nonprofits https://nff.org/our-work/financing/#Consulting for nonprofits https://nff.org/our-work/consulting/#Partnerships with funders and networks…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	M R	Exact match	Washington, United StatesHQ recorded Sep 28, 2026	51-200	208 contacts →
	Exact match “We are M+R.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Global Impact	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	51-200	170 contacts →
	Exact match “Global Impact serves as a trusted philanthropy advisor, intermediary, and nonprofit partner for greater giving.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Harvard Undergraduate Consulting Group	Exact match	Cambridge, MA, United StatesHQ recorded Sep 28, 2026	51-200	144 contacts →
	Exact match “Harvard Undergraduate Consulting Group is a nonprofit student organization at Harvard dedicated to helping businesses grow and achieve their strategic goals.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	The Konterra Group	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	11-50	140 contacts →
	Exact match “At KonTerra, we support organizations that manage international development, humanitarian and emergency management operations.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	International Advisory, Products And Systems I-Aps	Exact match	Alexandria, VA, United StatesHQ recorded Sep 28, 2026	201-500	138 contacts →
	Exact match “International Advisory, Products and Systems Ltd.(i-APS) We empower organizations & communities to be partners for change.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Amphil	Exact match	Oak Park, IL, United StatesHQ recorded Sep 28, 2026	51-200	136 contacts →
	Exact match “AmPhil exists to promote the art of civil association by helping philanthropists, charitable foundations, and nonprofit organizations grow and flourish through practical guidance…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	The Acceleration Project	Exact match	Scarsdale, NY, United StatesHQ recorded Sep 28, 2026	11-50	131 contacts →
	Exact match “The Acceleration Project (TAP) is a nonprofit organization with a mission to unlock pathways to wealth creation and economic mobility by accelerating under-resourced small…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	BWF	Exact match	Usa, United StatesHQ recorded Sep 28, 2026	51-200	125 contacts →
	Exact match “BWF Zuri is the nonprofit sector’s most comprehensive fundraising consulting company, helping organizations thrive in a rapidly changing landscape.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	IBI	Exact match	Arlington, VA, United StatesHQ recorded Sep 28, 2026	51-200	115 contacts →
	Exact match “IBI is an international economic development consulting firm whose main client is the U.S.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	JMT Consulting	Exact match	Mount Juliet, TN, United StatesHQ recorded Sep 28, 2026	51-200	112 contacts →
	Exact match “Our number one priority at JMT is to empower nonprofits to achieve their mission through optimized systems and processes.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Zuri Group	Exact match	Bend, OR, United StatesHQ recorded Sep 28, 2026	51-200	106 contacts →
	Exact match “Zuri Group partners with nonprofit organizations to turn big ideas into reality.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	Campbell & Company	Exact match	Chicago, IL, United StatesHQ recorded Sep 28, 2026	51-200	102 contacts →
	Exact match “Campbell & Company is a national nonprofit consulting firm that helps organizations create greater impact through fundraising, communications and strategic information services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	Hilltop Consultants	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	11-50	101 contacts →
	Exact match “Hilltop Consultants is a consulting organization entirely run by Georgetown University undergraduates that executes and leads 6-7 strategy consulting projects each semester for…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	ORR Group	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	51-200	99 contacts →
	Exact match “Orr Group was born out of a need for event management and fundraising support in the philanthropic sector.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “international nonprofit consultants”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 3,874 international nonprofit consultants based in the United States

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International nonprofit consultants based in the United States at a glance

As of Sep 28, 2026

34.2%Verified-email coverage

6.2Average contacts per company

1-10Median size (employees)

5.4%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

3,353

11-50

420

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 3,874 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “international nonprofit consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 8,199 professional contacts with verified work emails across the full matched dataset. 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 28, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

International nonprofit consultants by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “international nonprofit consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many international nonprofit consultants are there based in the United States?

RevenueBase identified 3,874 company matches for international nonprofit consultants associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

CCS Fundraising tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most international nonprofit consultants?

New York leads with 209 company records, followed by Washington (181) and Chicago (133).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 8,199 professional contacts with verified work emails tracked across these 3,874 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 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 SmartSearch, 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.