Company lists · Data refreshed September 2026

Top 25 Impact measurement consultants worldwide

Name: Impact measurement consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 4,264 companies tracked

RevenueBase identified 4,264 impact measurement consultants worldwide as of September 2026 and tracks 21,583 professional contacts across them, including 6,275 with verified work emails. The United States is the largest market and London the largest hub.

This list covers impact measurement consultants 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 20, 2026. Country and city lists for impact measurement consultants 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 20, 2026 86% judged on-target in blind review

4,264Companies

21,583Contacts tracked

6,275Verified emails

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The 25 largest impact measurement consultants worldwide

Ranked by team size

Top 25 of 4,264 impact measurement consultants worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to impact measurement consultants: 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	Lucas Group	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	10001+	756 contacts →
	Indirect 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 20, 2026
2	Sattva Consulting	Indirect evidence	Bangalore, IndiaHQ checked Sep 20, 2026	201-500	441 contacts →
	Indirect evidence “At Sattva Consulting, we believe meaningful change happens when people come together with a shared purpose.” Source: RevenueBase Database · checked Sep 20, 2026
3	Delivery Associates	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	361 contacts →
	Indirect evidence “We make change happen.” Source: RevenueBase Database · checked Sep 20, 2026
4	Nonprofit Hr, Powered By Onedigital	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	10001+	300 contacts →
	Partial evidence “Nonprofit HR was founded with one goal in mind: to strengthen the social impact sector by strengthening its people.” Source: RevenueBase Database · checked Sep 20, 2026
5	Cerp Evidence Matters	Partial evidence	Lahore, PakistanHQ checked Sep 20, 2026	51-200	254 contacts →
	Partial evidence “CERP is a leading impact-driven organisation focused on improving decision making through rigorous research, advanced analytics, capacity building, data collection and advisory…” Source: RevenueBase Database · checked Sep 20, 2026
6	TCC Group	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	n/a	232 contacts →
	Indirect evidence “TCC Group collaborates with leaders to solve complex social problems.” Source: RevenueBase Database · checked Sep 20, 2026
7	Catalyste	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	51-200	208 contacts →
	Indirect evidence “With over 50 years’ experience in over 30 countries, our global reputation is based on our demonstrated ability to manage consistently high-performing, highly inclusive…” Source: RevenueBase Database · checked Sep 20, 2026
8	DE Kleine Consultant	Partial evidence	Leiden, NetherlandsHQ checked Sep 20, 2026	51-200	195 contacts →
	Partial evidence “De Kleine Consultant maakt Kleine Consultants en haar klanten groot door strategisch advies te bieden daar waar het de meeste waarde toevoegt.” Source: RevenueBase Database · checked Sep 20, 2026
9	Assess Transform Reach ATR Consulting	Partial evidence	Bamako, United Arab EmiratesHQ checked Sep 20, 2026	51-200	139 contacts →
	Partial evidence “Assess Transform Reach (ATR) is a consultancy firm that specializes in monitoring evaluation and learning (MEL), socioeconomic research, capacity development, polling and surveys…” Source: RevenueBase Database · checked Sep 20, 2026
10	BWF	Indirect evidence	Usa, United StatesHQ checked Sep 20, 2026	51-200	125 contacts →
	Indirect evidence “BWF Zuri is the nonprofit sector’s most comprehensive fundraising consulting company, helping organizations thrive in a rapidly changing landscape.” Source: RevenueBase Database · checked Sep 20, 2026
11	Zuri Group	Indirect evidence	Bend, OR, United StatesHQ checked Sep 20, 2026	51-200	106 contacts →
	Indirect evidence “Zuri Group partners with nonprofit organizations to turn big ideas into reality.” Source: RevenueBase Database · checked Sep 20, 2026
12	Campbell & Company	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	51-200	102 contacts →
	Partial evidence “Campbell & Company is a national nonprofit consulting firm that helps organizations create greater impact through fundraising, communications and strategic information services.” Source: RevenueBase Database · checked Sep 20, 2026
13	KCI	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	51-200	101 contacts →
	Indirect evidence “At KCI, we are a firm focused on values and people…both ours and yours.” Source: RevenueBase Database · checked Sep 20, 2026
14	GDI Partners	Partial evidence	Delhi, IndiaHQ checked Sep 20, 2026	51-200	100 contacts →
	Partial evidence “We are an impact -driven start-up committed to transform the lives of individuals and communities for an equitable and inclusive world.” Source: RevenueBase Database · checked Sep 20, 2026
15	Syspons Gmbh	Partial evidence	Berlin, GermanyHQ checked Sep 20, 2026	51-200	96 contacts →
	Partial evidence “Syspons is a consulting firm for social innovation based in Berlin, Hamburg, Berlin and Cologne with approximately 60 consultants.” Source: RevenueBase Database · checked Sep 20, 2026
16	Smarter Good, INC	Partial evidence	Makati, PhilippinesHQ checked Sep 20, 2026	51-200	90 contacts →
	Partial evidence “Smarter Good partners with social sector teams and leaders across 30 countries to build strong foundations for lasting impact.” Source: RevenueBase Database · checked Sep 20, 2026
17	Third Plateau	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	51-200	88 contacts →
	Strong evidence “One of Fast Company's 2025 Best Workplaces for Innovators!* Third Plateau is an impact consultancy on a mission to build lasting social good.” Source: RevenueBase Database · checked Sep 20, 2026
18	Socha, LLC	Indirect evidence	Mapou, United StatesHQ checked Sep 20, 2026	11-50	88 contacts →
	Indirect evidence “Through providing evidence and building knowledge, SoCha empowers governments, international development agencies and organizations, and other implementers to understand their…” Source: RevenueBase Database · checked Sep 20, 2026
19	Rios Partners	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 20, 2026	51-200	86 contacts →
	Indirect evidence “Rios Partners provides management consulting services to commercial, non-profit, and government clients in the Washington, D.C.” Source: RevenueBase Database · checked Sep 20, 2026
20	Dfge Institute For Energy, Ecology And Economy	Indirect evidence	Greifenberg, GermanyHQ checked Sep 20, 2026	11-50	85 contacts →
	Indirect evidence “Seit unterstützt die DFGE Unternehmen dabei, Nachhaltigkeit messbar und strategisch nutzbar zu machen.” Source: RevenueBase Database · checked Sep 20, 2026
21	180 Degrees Consulting Nsut	Partial evidence	New Delhi, IndiaHQ checked Sep 20, 2026	11-50	85 contacts →
	Partial evidence “180 Degrees Consulting NSUT would help socially conscious organizations make a significant impact by providing them with sustainable solutions to face their challenges.” Source: RevenueBase Database · checked Sep 20, 2026
22	Sigma Research & Consulting Pvt. LTD	Indirect evidence	New Delhi, IndiaHQ checked Sep 20, 2026	51-200	84 contacts →
	Indirect evidence “Sigma Research & Consulting Pvt Ltd is a premier Indian organization providing expert services in social research, strategic consulting, and data analytics.” Source: RevenueBase Database · checked Sep 20, 2026
23	Schultz & Williams	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 20, 2026	51-200	83 contacts →
	Indirect evidence “Schultz & Williams is a national consulting firm dedicated to helping nonprofits of all types and sizes achieve financial stability, meet organizational goals, and support greater…” Source: RevenueBase Database · checked Sep 20, 2026
24	The Cloudburst Group	Indirect evidence	Landover, MD, United StatesHQ checked Sep 20, 2026	51-200	80 contacts →
	Indirect evidence “At The Cloudburst Group, our mission is to improve programs that benefit socially and economically disadvantaged persons in the U.S.” Source: RevenueBase Database · checked Sep 20, 2026
25	BCT Partners	Indirect evidence	East Brunswick, NJ, United StatesHQ checked Sep 20, 2026	51-200	80 contacts →
	Indirect evidence “At BCT Partners we harness the power of expertise and innovation to solve complex social problems, transform lives, and create lasting change.” Source: RevenueBase Database · checked Sep 20, 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: impact measurement consultants. 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 impact measurement consultants.
Partial evidence: Its own public description names part of impact measurement consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name impact measurement consultants. 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 4,264 impact measurement consultants worldwide

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Impact measurement consultants worldwide at a glance

As of Sep 20, 2026

29.1%Verified-email coverage

5.1Average contacts per company

1-10Median size (employees)

3.1%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

3,611

11-50

570

51-200

201-500

501-1,000

1,001-5,000

10001+

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 impact measurement consultants, 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 impact measurement consultants are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “impact measurement consultants”. 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 impact measurement consultants), 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 impact measurement consultants, 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, 6,275 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 20, 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.

Impact measurement consultants by location

22 lists · largest first

Every Impact measurement consultants 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 impact measurement consultants, 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 impact measurement consultants are there worldwide?

RevenueBase identified 4,264 impact measurement consultants 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?

Lucas Group, headquartered in Los Angeles, tops this list with the largest team on record.

Which country has the most impact measurement consultants?

The United States leads with 1,489 companies, followed by the United Kingdom (276) and Canada (195). Every impact measurement consultants list by country and city is linked on this page.

Which city has the most impact measurement consultants?

London leads with 131 headquartered companies, followed by New York (90) and Chicago (73).

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 6,275 verified decision-maker contacts tracked across these 4,264 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 20, 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.