Company lists · Data refreshed September 2026

Top 25 Data consultancy services worldwide

Name: Data consultancy services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 21,199 companies tracked

RevenueBase identified 21,199 data consultancy services worldwide as of September 2026 and tracks 303,922 professional contacts across them, including 99,017 with verified work emails. The United States is the largest market and London the largest hub.

This list covers data consultancy services 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 21, 2026. Country and city lists for data consultancy services 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 21, 2026 86% judged on-target in blind review

21,199Companies

303,922Contacts tracked

99,017Verified emails

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The 25 largest data consultancy services worldwide

Ranked by team size

Top 25 of 21,199 data consultancy services worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to data consultancy services: 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	EXL	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	10001+	40,100 contacts →
	Indirect evidence “Choosing a digital partner is about more than capabilities, it’s about collaboration and character.” Source: RevenueBase Database · checked Sep 21, 2026
2	ZS	Indirect evidence	Evanston, IL, United StatesHQ checked Sep 21, 2026	10001+	16,896 contacts →
	Indirect evidence “ZS is a management consulting and technology firm that partners with companies to improve life and how we live it.” Source: RevenueBase Database · checked Sep 21, 2026
3	Hitachi Vantara	Partial evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	5,001-10,000	9,674 contacts →
	Partial evidence “Hitachi Vantara is The Data Foundation for Innovation.” Source: RevenueBase Database · checked Sep 21, 2026
4	Tiger Analytics	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	5,001-10,000	6,160 contacts →
	Indirect evidence “In a world rife with complexity, we help our customers cut through uncertainty, plan strategically, and execute confidently.” Source: RevenueBase Database · checked Sep 21, 2026
5	Accenture Strategy & Consulting	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 21, 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 21, 2026
6	Ness Digital Engineering	Partial evidence	New York, NY, United StatesHQ checked Sep 21, 2026	1,001-5,000	5,336 contacts →
	Partial evidence “Ness Digital Engineering is a global provider of Intelligent Data and Software Engineering services, specializing in data, AI, and cloud-powered solutions that drive innovation…” Source: RevenueBase Database · checked Sep 21, 2026
7	Monitor Deloitte	Indirect evidence	United StatesHQ checked Sep 21, 2026	5,001-10,000	3,116 contacts →
	Indirect evidence “To navigate the future with confidence, organizations need to make and act upon the right choices: clear, timely and inspirational choices that deliver growth in a dynamic…” Source: RevenueBase Database · checked Sep 21, 2026
8	Artefact	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	1,001-5,000	2,016 contacts →
	Partial evidence “Artefact is a global consulting and engineering firm specializing in data and AI services, headquartered in Paris, and a leader in Europe.” Source: RevenueBase Database · checked Sep 21, 2026
9	SG Analytics	Partial evidence	New York, NY, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,964 contacts →
	Partial evidence “SG Analytics (SGA), a Straive company, is a leading global data and AI consulting firm delivering solutions across AI, Data, Technology, and Research.” Source: RevenueBase Database · checked Sep 21, 2026
10	Latentview Analytics	Partial evidence	Chennai, IndiaHQ checked Sep 21, 2026	1,001-5,000	1,655 contacts →
	Partial evidence “LatentView Analytics is an AI-driven analytics, data engineering, and consulting company that inspires and transforms businesses to excel in the digital world by harnessing the…” Source: RevenueBase Database · checked Sep 21, 2026
11	Syniti	Partial evidence	Needham, MA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,633 contacts →
	Partial evidence “We tackle the hardest work in data for the world's largest organizations.” Source: RevenueBase Database · checked Sep 21, 2026
12	Adastra	Indirect evidence	CanadaHQ checked Sep 21, 2026	1,001-5,000	1,543 contacts →
	Indirect evidence “For over two decades, Adastra Corporation has transformed businesses into digital leaders, helping global organizations innovate, achieve operational excellence, and create…” Source: RevenueBase Database · checked Sep 21, 2026
13	Valcon	Partial evidence	Utrecht, NetherlandsHQ checked Sep 21, 2026	1,001-5,000	1,527 contacts →
	Partial evidence “At Valcon, we are a European powerhouse in AI- and data-driven business transformation.” Source: RevenueBase Database · checked Sep 21, 2026
14	Solita	Partial evidence	Tampere, FinlandHQ checked Sep 21, 2026	1,001-5,000	1,495 contacts →
	Partial evidence “We create impact that lasts by combining tech, data and human insight.” Source: RevenueBase Database · checked Sep 21, 2026
15	Infocepts	Partial evidence	Washington Dc, VA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,485 contacts →
	Partial evidence “Infocepts enables improved business results through more effective use of data, AI & user-friendly analytics.” Source: RevenueBase Database · checked Sep 21, 2026
16	SDG Group	Partial evidence	Milano, ItalyHQ checked Sep 21, 2026	1,001-5,000	1,328 contacts →
	Partial evidence “We are a consulting firm specialized in AI, Data & Analytics.” Source: RevenueBase Database · checked Sep 21, 2026
17	Lingaro	Partial evidence	Warsaw, PolandHQ checked Sep 21, 2026	1,001-5,000	1,296 contacts →
	Partial evidence “You’ve got the data, now what’s next?” Source: RevenueBase Database · checked Sep 21, 2026
18	Data Axle	Partial evidence	Dallas, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,088 contacts →
	Partial evidence “Data Axle helps clients create a foundation of clean data, find new leads, develop winning strategies, design beautiful campaigns, and can handle all day-to-day execution needs” Source: RevenueBase Database · checked Sep 21, 2026
19	Reed Business Information	Indirect evidence	United KingdomHQ checked Sep 21, 2026	10001+	1,009 contacts →
	Indirect evidence “LexisNexis® Risk Solutions includes seven brands that span multiple industries.” Source: RevenueBase Database · checked Sep 21, 2026
20	Mastech Digital	Partial evidence	Moon Township, PA, United StatesHQ checked Sep 21, 2026	1,001-5,000	998 contacts →
	Partial evidence “Mastech Digital helps enterprises ignite intelligence and transform tomorrow by turning data into real, measurable business outcomes.” Source: RevenueBase Database · checked Sep 21, 2026
21	Bluetab, An IBM Company	Indirect evidence	Madrid, SpainHQ checked Sep 21, 2026	1,001-5,000	994 contacts →
	Indirect evidence “Ser bluetaber: “Lo que más me gusta de Bluetab: todos/as somos personas, y no números, es todo muy cercano”.” Source: RevenueBase Database · checked Sep 21, 2026
22	First Derivative	Partial evidence	Newry, United KingdomHQ checked Sep 21, 2026	1,001-5,000	988 contacts →
	Partial evidence “First Derivative is driven by people, data, and technology, unlocking the value of insight, hindsight, and foresight to drive organizations forward.” Source: RevenueBase Database · checked Sep 21, 2026
23	Mresult	Partial evidence	Mystic, United StatesHQ checked Sep 21, 2026	501-1,000	929 contacts →
	Partial evidence “About MResult MResult is a leading data & analytics intelligence technology solutions provider to companies that value insights from information as a competitive advantage.” Source: RevenueBase Database · checked Sep 21, 2026
24	ORTEC	Indirect evidence	Zoetermeer, NetherlandsHQ checked Sep 21, 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 21, 2026
25	Mark UP	Indirect evidence	São Paulo, BrazilHQ checked Sep 21, 2026	n/a	809 contacts →
	Indirect evidence “Não é o que fazemos.” Source: RevenueBase Database · checked Sep 21, 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: data consultancy services. 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 data consultancy services.
Partial evidence: Its own public description names part of data consultancy services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name data consultancy services. 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 21,199 data consultancy services worldwide

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Data consultancy services worldwide at a glance

As of Sep 21, 2026

32.6%Verified-email coverage

14.3Average contacts per company

1-10Median size (employees)

3.3%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

14,734

11-50

4,769

51-200

1,259

201-500

248

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 data consultancy services, 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 data consultancy services are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “data consultancy services”. 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 data consultancy services), 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 data consultancy services, 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, 99,017 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 21, 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.

Data consultancy services by location

106 lists · largest first

Every Data consultancy services 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 data consultancy services, 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 data consultancy services are there worldwide?

RevenueBase identified 21,199 data consultancy services 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?

EXL, headquartered in New York, tops this list with the largest team on record.

Which country has the most data consultancy services?

The United States leads with 4,401 companies, followed by the United Kingdom (1,515) and India (1,435). Every data consultancy services list by country and city is linked on this page.

Which city has the most data consultancy services?

London leads with 691 headquartered companies, followed by Sao Paulo (315) and Paris (275).

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 99,017 verified decision-maker contacts tracked across these 21,199 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 21, 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.