Company lists · Data refreshed September 2026

Top 25 Taxonomy and classification consulting firms worldwide

RevenueBase identified 864 company matches for taxonomy and classification consulting firms worldwide as of September 2026 and tracks 8,221 professional contacts across them, including 2,895 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for taxonomy and classification consulting firms worldwide, 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 29, 2026. Country and city lists for taxonomy and classification consulting firms follow the table.

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 29, 2026 How this list was built
864Companies
8,221Contacts tracked
2,895Verified emails
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The 25 largest taxonomy and classification consulting firms worldwide

Ranked by team size
Top 25 of 864 company matches for taxonomy and classification consulting firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchVentura, CA, United StatesHQ recorded Sep 29, 2026501-1,000479 contacts →

Exact match

“Rincon Consultants is a multi-disciplinary environmental sciences, planning, and engineering consulting firm that provides quality professional services to government and industry.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchCheyenne, WY, United StatesHQ recorded Sep 29, 2026201-500408 contacts →

Exact match

“WEST provides environmental and statistical consulting services and contract research nationally and internationally to industry, government, and private organizations.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchBedford, NH, United StatesHQ recorded Sep 29, 2026201-500189 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchGuildford, United KingdomHQ recorded Sep 29, 202651-200133 contacts →

Exact match

“Thomson Environmental Consultants are experts in environmental compliance with offices in Guildford, Leeds, Cardiff, Birmingham and Manchester.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchBelo Horizonte, BrazilHQ recorded Sep 29, 202651-200121 contacts →

Exact match

“A Empresa Bicho do Mato Meio Ambiente Ltda.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchBeek En Donk, NetherlandsHQ recorded Sep 29, 202651-200117 contacts →

Exact match

“Teia is dienstbaar aan uw ecologisch adviesbureau!”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchSaint-charles-sur-richelieu, QC, CanadaHQ recorded Sep 29, 202651-200107 contacts →

Exact match

“Depuis plus de 45 ans, le Groupe Conseil UDA Inc.(UDA) accompagne, encadre et soutient ses clients dans leurs projets en environnement, en agriculture et en foresterie grâce à…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchChantilly, VA, United StatesHQ recorded Sep 29, 2026201-500104 contacts →

Exact match

“Established in 1983, TechLaw provides environmental and management consulting services to the public sector nationwide.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchNorth Vancouver, BC, CanadaHQ recorded Sep 29, 202611-5098 contacts →

Exact match

“For more than 15 years, we operated as Sartori Environmental Inc, establishing an exceptional reputation for our reliable, responsible, and innovative approach.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchParacatu, BrazilHQ recorded Sep 29, 202651-20093 contacts →

Exact match

“A Campo Análises é uma empresa nipo-brasileira com 45 anos de história intimamente relacionada ao desenvolvimento do Cerrado brasileiro.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchAvignon, FranceHQ recorded Sep 29, 202651-20088 contacts →

Exact match

“Fondée en 1998, Naturalia Environnement s’impose aujourd’hui comme un acteur reconnu en matière d’expertises naturalistes et d’études réglementaires portant sur la biodiversité.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchAmsterdam, NetherlandsHQ recorded Sep 29, 2026n/a87 contacts →

Exact match

“Gaia Ecologie, uw toegewijde ecologisch adviesbureau, is gespecialiseerd in hoogwaardig grootschalig ecologisch onderzoek en uitgebreide rapportage.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchPune, IndiaHQ recorded Sep 29, 202651-20081 contacts →

Exact match

“Techknowgreen Solutions Limited is a leading environmental consulting firm in India with 24+ years of expertise in regulatory compliance, cutting-edge technology, and IT solutions.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchGresham, OR, United StatesHQ recorded Sep 29, 202611-5078 contacts →

Exact match

“Cramer Fish Sciences (CFS) is an employee owned fisheries research consulting firm with offices in Oregon, California, Idaho and Washington.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchLos Gatos, CA, United StatesHQ recorded Sep 29, 202651-20069 contacts →

Exact match

“Since 1970, the highly-trained ecologists and professionals at H.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchBend, OR, United StatesHQ recorded Sep 29, 202651-20065 contacts →

Exact match

“SummitWest is an environmental consulting company that is home to a team of dynamic, solution-oriented thinkers.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchLa Montagne, FranceHQ recorded Sep 29, 202651-20064 contacts →

Exact match

“Calidris est un bureau d’études spécialisé dans le domaine de l’écologie.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchPézenas, FranceHQ recorded Sep 29, 202611-5062 contacts →

Exact match

“Spécialisé dans l’expertise de la faune, de la flore et des milieux naturels, le bureau d’études ALTIFAUNE a développé une expérience technique et scientifique au service de…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchPetoskey, MI, United StatesHQ recorded Sep 29, 202611-5060 contacts →

Exact match

“RESCOM Environmental Corp (RESCOM) is a national environmental consulting firm, providing environmental, biological and cultural resource assessment services.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchWalnut Creek, CA, United StatesHQ recorded Sep 29, 202611-5059 contacts →

Exact match

“Founded in 2011, Sequoia is a California-based, woman-owned, small, and disadvantaged business (WBE | SBE | DBE) that provides environmental consulting services to public agencies…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchCharlottesville, VA, United StatesHQ recorded Sep 29, 202651-20056 contacts →

Exact match

“Skeo Solutions is a small business providing environmental consulting services.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchCo. Kerry, IrelandHQ recorded Sep 29, 202651-20056 contacts →

Exact match

“We are an Irish owned and operated environmental consultancy and testing facility.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchNew Bremen, OH, United StatesHQ recorded Sep 29, 202611-5055 contacts →

Exact match

“Brookside Laboratories Inc.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchMarseille, FranceHQ recorded Sep 29, 202611-5053 contacts →

Exact match

“ECO-MED est un bureau d'études, d'expertise et de conseil en environnement naturel spécifiques à l’aménagement du territoire et à la mise en valeur des milieux naturels.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchBeaucouzé, FranceHQ recorded Sep 29, 202651-20053 contacts →

Exact match

“Aquascop est un bureau d´études indépendant spécialisé dans l´étude des milieux aquatiques, implantés sur 5 agences en France métropolitaine (Angers, Montpellier, Toulouse, Nancy…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 864 taxonomy and classification consulting firms worldwide

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Taxonomy and classification consulting firms worldwide at a glance

As of Sep 29, 2026
35.2%Verified-email coverage
9.5Average contacts per company
1-10Median size (employees)
1.2%Largest-city concentration · Sao Paulo
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
595
11-50
208
51-200
48
201-500
9
501-1,000
1
5,001-10,000
1

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for taxonomy and classification consulting firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “taxonomy and classification consulting firms” 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. 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 2,895 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 29, 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.

Taxonomy and classification consulting firms by location

5 lists · largest first

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

Countries

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 “taxonomy and classification consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many taxonomy and classification consulting firms are there worldwide?

RevenueBase identified 864 company matches for taxonomy and classification consulting firms worldwide 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?

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

Which country has the most taxonomy and classification consulting firms?

The United States leads with 194 companies, followed by Brazil (133) and France (59). Every taxonomy and classification consulting firms list by country and city is linked on this page.

Which city has the most taxonomy and classification consulting firms?

Sao Paulo leads with 10 company records, followed by Santiago (7) and Belo Horizonte (6).

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 2,895 professional contacts with verified work emails tracked across these 864 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 29, 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.