Company lists · Data refreshed September 2026

Top 25 Management consulting firms for nonprofits worldwide

RevenueBase identified 44,795 management consulting firms for nonprofits worldwide as of September 2026 and tracks 301,790 professional contacts across them, including 75,403 with verified work emails. The United States is the largest market and London the largest hub.

This list covers management consulting firms for nonprofits worldwide, 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 28, 2026. Country and city lists for management consulting firms for nonprofits follow the table.

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 28, 2026 86% judged on-target in blind review
44,795Companies
301,790Contacts tracked
75,403Verified emails
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The 25 largest management consulting firms for nonprofits worldwide

Ranked by team size
Top 25 of 44,795 management consulting firms for nonprofits worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to management consulting firms for nonprofits: 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
1Partial evidenceMenlo Park, CA, United StatesHQ checked Sep 28, 20265,001-10,0008,779 contacts →

Partial evidence

“Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…”

Source: RevenueBase Database · checked Sep 28, 2026
2Partial evidenceCalgary, AB, CanadaHQ checked Sep 28, 20265,001-10,0008,773 contacts →

Partial evidence

“MNP is a leading national accounting, tax and business consulting firm in Canada.”

Source: RevenueBase Database · checked Sep 28, 2026
3Partial evidenceChicago, IL, United StatesHQ checked Sep 28, 20265,001-10,0006,978 contacts →

Partial evidence

“As one of the original firms, we’ve never lost sight of the fact that consulting is a people business.”

Source: RevenueBase Database · checked Sep 28, 2026
4Partial evidenceChicago, IL, United StatesHQ checked Sep 28, 2026n/a4,751 contacts →

Partial evidence

“We help businesses and nonprofits grow, communicate, and succeed, professionally and affordably.”

Source: RevenueBase Database · checked Sep 28, 2026
5Indirect evidenceBoston, MA, United StatesHQ checked Sep 28, 20261,001-5,0004,093 contacts →

Indirect evidence

“L.E.K.”

Source: RevenueBase Database · checked Sep 28, 2026
6Partial evidenceLondon, United KingdomHQ checked Sep 28, 20261,001-5,0002,179 contacts →

Partial evidence

“Baringa is a global consulting firm that helps leaders drive meaningful change and create value.”

Source: RevenueBase Database · checked Sep 28, 2026
7Indirect evidenceAmersfoort, NetherlandsHQ checked Sep 28, 20261,001-5,0001,755 contacts →

Indirect evidence

“BMC is opgericht vanuit de overtuiging dat de bedrijfsvoering binnen de overheid kon worden verbeterd.”

Source: RevenueBase Database · checked Sep 28, 2026
8Partial evidenceStockholm, SwedenHQ checked Sep 28, 2026n/a1,623 contacts →

Partial evidence

“Governo är ett managementkonsultbolag som har en vision om ett attraktivt samhälle i takt med framtiden.”

Source: RevenueBase Database · checked Sep 28, 2026
9Indirect evidenceNew Delhi, IndiaHQ checked Sep 28, 2026501-1,0001,322 contacts →

Indirect evidence

“Headquartered in India with six international offices in Cambodia, Ethiopia, Kenya, the Philippines, Germany and the United Kingdom, IPE Global Group offers a range of integrated…”

Source: RevenueBase Database · checked Sep 28, 2026
10Indirect evidenceMiami, FL, United StatesHQ checked Sep 28, 20261,001-5,0001,260 contacts →

Indirect evidence

“Expertly balancing experience and innovation to deliver unique solutions to public and private clients.”

Source: RevenueBase Database · checked Sep 28, 2026
11Partial evidenceLondon, United KingdomHQ checked Sep 28, 2026201-5001,221 contacts →

Partial evidence

“Blackmont Consulting provides 100% free advisory services to NGO´s, NPO´s and start-ups.”

Source: RevenueBase Database · checked Sep 28, 2026
12Indirect evidenceDallas, TX, United StatesHQ checked Sep 28, 20261,001-5,0001,160 contacts →

Indirect evidence

“With over 1,200 professionals across 18 international offices, Riveron delivers tailored solutions for CFOs, private equity firms, and key stakeholders.”

Source: RevenueBase Database · checked Sep 28, 2026
13Partial evidenceFrisco, TX, United StatesHQ checked Sep 28, 2026501-1,0001,149 contacts →

Partial evidence

“W3Global is a leading provider of end-to-end consulting services, empowering businesses to achieve their strategic goals and optimize their operations.”

Source: RevenueBase Database · checked Sep 28, 2026
14Indirect evidenceSaint Louis, MO, United StatesHQ checked Sep 28, 2026501-1,0001,056 contacts →

Indirect evidence

“RubinBrown provides unmatched service to closely held and publicly traded companies in specialized market sectors as well as non-profit and public sector organizations.”

Source: RevenueBase Database · checked Sep 28, 2026
15Indirect evidenceUtrecht, NetherlandsHQ checked Sep 28, 20261,001-5,000996 contacts →

Indirect evidence

“Meer dan cijfers: wij zijn jouw partner in groei Bij Baker Tilly kijken we verder.”

Source: RevenueBase Database · checked Sep 28, 2026
16Partial evidencePhiladelphia, PA, United StatesHQ checked Sep 28, 2026501-1,000775 contacts →

Partial evidence

“THE NONPROFIT ACCOUNTING SPECIALISTS.”

Source: RevenueBase Database · checked Sep 28, 2026
17Strong evidenceLos Angeles, CA, United StatesHQ checked Sep 28, 202610001+756 contacts →

Strong evidence

“Ultimate Minds is a professional consulting and marketing firm dedicated to empowering businesses, nonprofits, and startups with smart, affordable, and results-driven solutions.”

Source: RevenueBase Database · checked Sep 28, 2026
18Indirect evidenceNew York, NY, United StatesHQ checked Sep 28, 2026501-1,000728 contacts →

Indirect evidence

“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.”

Source: RevenueBase Database · checked Sep 28, 2026
19Strong evidence千代田区, JapanHQ checked Sep 28, 2026501-1,000696 contacts →

Strong evidence

“is a management consulting company based out of, Japan.”

Source: RevenueBase Database · checked Sep 28, 2026
20Indirect evidenceUnited StatesHQ checked Sep 28, 2026n/a686 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
21Strong evidenceCincinnati, OH, United StatesHQ checked Sep 28, 2026501-1,000618 contacts →

Strong evidence

“SEI is a management consulting firm delivering fresh perspectives and reliable results.”

Source: RevenueBase Database · checked Sep 28, 2026
22Indirect evidenceWayne, PA, United StatesHQ checked Sep 28, 20261,001-5,000557 contacts →

Indirect evidence

“For more than 25 years, SolomonEdwards has empowered organizations to tackle common and complex business challenges through strategic advisory, technical advocacy, and hands-on…”

Source: RevenueBase Database · checked Sep 28, 2026
23Strong evidenceNeuilly Sur Seine, FranceHQ checked Sep 28, 2026501-1,000551 contacts →

Strong evidence

“julhiet sterwen is a key player in management, human resources and operational consulting.”

Source: RevenueBase Database · checked Sep 28, 2026
24Strong evidenceChicago, IL, United StatesHQ checked Sep 28, 2026201-500546 contacts →

Strong evidence

“DLC is an award-winning industry leader in Finance, Accounting, Program Management & Process Improvement Consulting.”

Source: RevenueBase Database · checked Sep 28, 2026
25Partial evidenceMilan, ItalyHQ checked Sep 28, 2026n/a535 contacts →

Partial evidence

“Consultant Corporate Governance and Project Management.”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 44,795 management consulting firms for nonprofits worldwide

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Management consulting firms for nonprofits worldwide at a glance

As of Sep 28, 2026
25.0%Verified-email coverage
6.7Average contacts per company
1-10Median size (employees)
1.6%Largest-city concentration · London
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
35,900
11-50
7,162
51-200
1,257
201-500
219
501-1,000
56
1,001-5,000
60
5,001-10,000
15
10001+
35

Email recency is reported on each country list linked below.

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 management consulting firms for nonprofits, 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.
Coverage
Every country. Country and city lists for management consulting firms for nonprofits are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “management consulting firms for nonprofits”. 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 management consulting firms for nonprofits), 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 management consulting firms for nonprofits, and records with no verified work email.
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, 75,403 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 28, 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.

Management consulting firms for nonprofits by location

192 lists · largest first

Every Management consulting firms for nonprofits list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 management consulting firms for nonprofits, 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 management consulting firms for nonprofits are there worldwide?

RevenueBase identified 44,795 management consulting firms for nonprofits worldwide 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?

Protiviti, headquartered in Menlo Park, tops this list with the largest team on record.

Which country has the most management consulting firms for nonprofits?

The United States leads with 13,319 companies, followed by the United Kingdom (2,234) and France (2,050). Every management consulting firms for nonprofits list by country and city is linked on this page.

Which city has the most management consulting firms for nonprofits?

London leads with 738 headquartered companies, followed by Paris (572) and New York (562).

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 75,403 verified decision-maker contacts tracked across these 44,795 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 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 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.