Company lists · Data refreshed September 2026

Top 25 Decision science consultancies worldwide

Name: Decision science consultancies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 3,701 companies tracked

RevenueBase identified 3,701 decision science consultancies worldwide as of September 2026 and tracks 38,015 professional contacts across them, including 12,654 with verified work emails. The United States is the largest market and London the largest hub.

This list covers decision science consultancies 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 decision science consultancies 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

3,701Companies

38,015Contacts tracked

12,654Verified emails

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The 25 largest decision science consultancies worldwide

Ranked by team size

Top 25 of 3,701 decision science consultancies worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to decision science consultancies: 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	Accenture Strategy & Consulting	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	5,001-10,000	5,514 contacts →
	Indirect evidence “Accenture Strategy combines deep industry expertise, advanced analytics capabilities and human-led design methodologies that enable clients to act with speed and confidence.” Source: RevenueBase Database · checked Sep 28, 2026
2	MU Sigma INC	Partial evidence	Northbrook, IL, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,774 contacts →
	Partial evidence “Mu Sigma builds decisions.” Source: RevenueBase Database · checked Sep 28, 2026
3	Dunnhumby	Partial evidence	Brook Green, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,857 contacts →
	Partial evidence “dunnhumby helps businesses grow through faster, better decision making, as the essential intelligence layer connecting the world’s leading retailers and brands.” Source: RevenueBase Database · checked Sep 28, 2026
4	Infocepts	Indirect evidence	Washington Dc, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,485 contacts →
	Indirect evidence “Infocepts enables improved business results through more effective use of data, AI & user-friendly analytics.” Source: RevenueBase Database · checked Sep 28, 2026
5	ORTEC	Indirect evidence	Zoetermeer, NetherlandsHQ checked Sep 28, 2026	501-1,000	895 contacts →
	Indirect evidence “ORTEC is a global provider of supply chain planning and workforce management software, helping organizations optimize the use of their people and resources through trusted…” Source: RevenueBase Database · checked Sep 28, 2026
6	Spinnaker Analytics	Indirect evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	51-200	337 contacts →
	Indirect evidence “Spinnaker Analytics builds powerful predictive algorithms to engineer our clients’ growth.” Source: RevenueBase Database · checked Sep 28, 2026
7	Brandscapes Worldwide	Partial evidence	Mumbai, IndiaHQ checked Sep 28, 2026	201-500	335 contacts →
	Partial evidence “Brandscapes leverages the power of advanced data science tools and the practical marketing and communication planning expertise to distill actionable marketing insights.” Source: RevenueBase Database · checked Sep 28, 2026
8	Lumivero	Partial evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	201-500	296 contacts →
	Partial evidence “Turn data complexity into clarity with Lumivero – a leading provider of research and decision software built to help organizations simplify complex data, uncover meaningful…” Source: RevenueBase Database · checked Sep 28, 2026
9	Aspect Ratio	Strong evidence	Pune, IndiaHQ checked Sep 28, 2026	51-200	277 contacts →
	Strong evidence “Aspect Ratio is a team of data scientists, researchers and engineers who believe in the power of data to shape decisions.” Source: RevenueBase Database · checked Sep 28, 2026
10	Fresh Gravity	Partial evidence	Flower Mound, TX, United StatesHQ checked Sep 28, 2026	201-500	245 contacts →
	Partial evidence “Founded in 2015, Fresh Gravity helps businesses make data-driven decisions.” Source: RevenueBase Database · checked Sep 28, 2026
11	Epinion	Indirect evidence	Copenhagen N, DenmarkHQ checked Sep 28, 2026	51-200	245 contacts →
	Indirect evidence “With 25 years of experience as a research and consulting firm, we help organizations and businesses find direction in an increasingly data-complex world, transforming vast…” Source: RevenueBase Database · checked Sep 28, 2026
12	Quantzig	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	216 contacts →
	Indirect evidence “Quantzig is at the forefront of partnering with businesses to help them unlock transformative value through analytics solutions.” Source: RevenueBase Database · checked Sep 28, 2026
13	Indus Insights	Partial evidence	Gurgaon, IndiaHQ checked Sep 28, 2026	51-200	205 contacts →
	Partial evidence “Indus Insights is a Data Science consulting firm focused on the Financial Services sector.” Source: RevenueBase Database · checked Sep 28, 2026
14	PI Data Strategy & Consulting	Indirect evidence	Cordoba, ArgentinaHQ checked Sep 28, 2026	51-200	198 contacts →
	Indirect evidence “En Pi Consulting nos dedicamos a potenciar empresas mediante la detección de oportunidades de mejora en su negocio a través de la consultoría y aplicaciones de BI, IA, Data…” Source: RevenueBase Database · checked Sep 28, 2026
15	PW Consulting	Indirect evidence	Culemborg, NetherlandsHQ checked Sep 28, 2026	51-200	192 contacts →
	Indirect evidence “PW Consulting is the specialist in the field of Business Analytics, including e.g.” Source: RevenueBase Database · checked Sep 28, 2026
16	Investor Group Services IGS	Partial evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	51-200	168 contacts →
	Partial evidence “For over 25 years, IGS has helped investors and management teams make better, faster decisions, from commercial due diligence, to growth strategy, pricing, and go-to-market…” Source: RevenueBase Database · checked Sep 28, 2026
17	Artelys	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	158 contacts →
	Partial evidence “Artelys is a fast-growing company specialized in optimization, data science, and modeling.” Source: RevenueBase Database · checked Sep 28, 2026
18	Analytics8 Data & Analytics Consultancy	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	51-200	144 contacts →
	Indirect evidence “Analytics8 is a data and AI consulting firm that helps data-driven enterprises define their data strategy, modernize their platforms, operationalize AI, and turn data ambition…” Source: RevenueBase Database · checked Sep 28, 2026
19	Business Science Corporation	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	140 contacts →
	Partial evidence “Business Science Corporation apply science and technology in order to ensure that our clients significantly increase their performance by giving them both the knowledge to perform…” Source: RevenueBase Database · checked Sep 28, 2026
20	Ltplabs	Indirect evidence	PortugalHQ checked Sep 28, 2026	51-200	140 contacts →
	Indirect evidence “LTPlabs is a consulting firm that combines Advanced Analytics and AI expertise with a strong business acumen.” Source: RevenueBase Database · checked Sep 28, 2026
21	Element61	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	51-200	136 contacts →
	Indirect evidence “element61 helps organisations turn data into business impact by designing, building and running Analytics & AI solutions end-to-end.” Source: RevenueBase Database · checked Sep 28, 2026
22	Adqura	Indirect evidence	Moorgate, United KingdomHQ checked Sep 28, 2026	51-200	127 contacts →
	Indirect evidence “At Adqura, we pride ourselves in delivering an exceptional customer experience to our clients and enabling them to deliver a world-class experience to their customers.” Source: RevenueBase Database · checked Sep 28, 2026
23	Summit	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	124 contacts →
	Indirect evidence “Summit is a quantitative consulting and data analytics firm that works with public and commercial clients to turn data into actionable intelligence.” Source: RevenueBase Database · checked Sep 28, 2026
24	Yanhaas	Indirect evidence	Bogota, ColombiaHQ checked Sep 28, 2026	51-200	124 contacts →
	Indirect evidence “Our main objective is to partner with our clients.” Source: RevenueBase Database · checked Sep 28, 2026
25	Capitalize Analytics	Partial evidence	Dallas, TX, United StatesHQ checked Sep 28, 2026	51-200	121 contacts →
	Partial evidence “Capitalize helps organizations radically change the way they make decisions.” Source: RevenueBase Database · checked Sep 28, 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: decision science consultancies. 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 decision science consultancies.
Partial evidence: Its own public description names part of decision science consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name decision science consultancies. 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 3,701 decision science consultancies worldwide

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Decision science consultancies worldwide at a glance

As of Sep 28, 2026

33.3%Verified-email coverage

10.3Average contacts per company

1-10Median size (employees)

3.3%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

2,770

11-50

727

51-200

168

201-500

501-1,000

1,001-5,000

5,001-10,000

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 decision science consultancies, 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 decision science consultancies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “decision science consultancies”. 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 decision science consultancies), 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 decision science consultancies, 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, 12,654 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.

Decision science consultancies by location

28 lists · largest first

Every Decision science consultancies 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 decision science consultancies, 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 decision science consultancies are there worldwide?

RevenueBase identified 3,701 decision science consultancies 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?

Accenture Strategy & Consulting, headquartered in Chicago, tops this list with the largest team on record.

Which country has the most decision science consultancies?

The United States leads with 842 companies, followed by the United Kingdom (212) and Brazil (205). Every decision science consultancies list by country and city is linked on this page.

Which city has the most decision science consultancies?

London leads with 122 headquartered companies, followed by Sao Paulo (70) and New York (49).

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 12,654 verified decision-maker contacts tracked across these 3,701 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.