Company lists · Data refreshed September 2026

Top 25 Environmental organizations based in Belgium

Name: Environmental organizations based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 340 companies tracked

RevenueBase identified 340 environmental organizations headquartered in Belgium as of September 2026 and tracks 4,243 professional contacts across them, including 1,894 with verified work emails. Brussels is the largest hub.

This list covers environmental organizations headquartered in Belgium, 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 19, 2026.

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 19, 2026 86% judged on-target in blind review

340Companies

4,243Contacts tracked

1,894Verified emails

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The 25 largest environmental organizations based in Belgium

Ranked by team size

Top 25 of 340 environmental organizations based in Belgium, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to environmental organizations: 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	Brussels Environment	Strong evidence	Brussels, BelgiumHQ checked Sep 19, 2026	501-1,000	700 contacts →
	Strong evidence “Created in 1989, Brussels Environment is the administration for the environment and energy in the Brussels-Capital Region.” Source: RevenueBase Database · checked Sep 19, 2026
2	Natuurpunt	Indirect evidence	Mechelen, BelgiumHQ checked Sep 19, 2026	201-500	350 contacts →
	Indirect evidence “Natuurpunt is a volunteer organization that protects vulnerable and threatened nature in Flanders.” Source: RevenueBase Database · checked Sep 19, 2026
3	Natagora	Indirect evidence	Namur, BelgiumHQ checked Sep 19, 2026	51-200	154 contacts →
	Indirect evidence “Natagora a pour but de protéger la nature, plus particulièrement en Wallonie et à Bruxelles.” Source: RevenueBase Database · checked Sep 19, 2026
4	Trevi NV	Strong evidence	Gentbrugge, BelgiumHQ checked Sep 19, 2026	51-200	101 contacts →
	Strong evidence “Trevi Environmental Solutions is a Belgian environmental technology company.” Source: RevenueBase Database · checked Sep 19, 2026
5	ECOS	Strong evidence	Brussels, BelgiumHQ checked Sep 19, 2026	11-50	98 contacts →
	Strong evidence “ECOS is an international NGO with a network of members and experts advocating for environmentally friendly technical standards, policies and laws.” Source: RevenueBase Database · checked Sep 19, 2026
6	Goodplanet Belgium	Indirect evidence	Ixelles, BelgiumHQ checked Sep 19, 2026	51-200	91 contacts →
	Indirect evidence “GoodPlanet est une association qui existe depuis plus de 25 ans et qui a à cœur de rendre le premier pas vers la durabilité facile et accessible à toutes et tous.” Source: RevenueBase Database · checked Sep 19, 2026
7	BOS	Indirect evidence	Gontrode, BelgiumHQ checked Sep 19, 2026	11-50	91 contacts →
	Indirect evidence “BOS+ is an NGO dedicated to sustainable forestry, conservation and afforestation in Flanders and worldwide.” Source: RevenueBase Database · checked Sep 19, 2026
8	Generation Climate Europe GCE	Strong evidence	Brussels, BelgiumHQ checked Sep 19, 2026	51-200	91 contacts →
	Strong evidence “Generation Climate Europe (GCE) is the largest coalition of youth-led networks on climate and environmental issues at the European level.” Source: RevenueBase Database · checked Sep 19, 2026
9	RSK Benelux BV	Strong evidence	Houthalen, BelgiumHQ checked Sep 19, 2026	51-200	86 contacts →
	Strong evidence “RSK Benelux bvba is an evolving and innovative environmental consultancy with 8 offices in Belgium.” Source: RevenueBase Database · checked Sep 19, 2026
10	Wwf-Belgium	Indirect evidence	Brussels, BelgiumHQ checked Sep 19, 2026	11-50	80 contacts →
	Indirect evidence “WWF is a global independent organization for nature conservation.” Source: RevenueBase Database · checked Sep 19, 2026
11	Greenpeace Belgium	Indirect evidence	Brussels, BelgiumHQ checked Sep 19, 2026	51-200	60 contacts →
	Indirect evidence “Greenpeace exists because this fragile Earth deserves a voice.” Source: RevenueBase Database · checked Sep 19, 2026
12	Revolve	Indirect evidence	Brussels, BelgiumHQ checked Sep 19, 2026	11-50	53 contacts →
	Indirect evidence “Fostering cultures of sustainability, REVOLVE is a communications group with offices and staff in Barcelona, Beirut, Brussels, Lisbon, Mumbai and Vienna.” Source: RevenueBase Database · checked Sep 19, 2026
13	DE Winning	Indirect evidence	Lummen, BelgiumHQ checked Sep 19, 2026	201-500	53 contacts →
	Indirect evidence “Uw groen.” Source: RevenueBase Database · checked Sep 19, 2026
14	WWF European Policy Office	Indirect evidence	Brussels, BelgiumHQ checked Sep 19, 2026	11-50	50 contacts →
	Indirect evidence “At WWF, we envision a world in which people and nature thrive – but we’ll only get there if we all play a role.” Source: RevenueBase Database · checked Sep 19, 2026
15	Velt VZW	Indirect evidence	Berchem, BelgiumHQ checked Sep 19, 2026	11-50	49 contacts →
	Indirect evidence “Velt vzw (Vereniging voor ecologisch koken, leven en tuinieren) is de vereniging voor al wie milieuvriendelijk aan de slag wil in tuin of keuken.” Source: RevenueBase Database · checked Sep 19, 2026
16	Institute For European Environmental Policy Ieep	Strong evidence	Brussels, BelgiumHQ checked Sep 19, 2026	11-50	45 contacts →
	Strong evidence “The Institute for European Environmental Policy (IEEP) is the only Brussels-based think tank specialised in environmental policy and sustainability.” Source: RevenueBase Database · checked Sep 19, 2026
17	Natagriwal Asbl	Indirect evidence	Louvain-la-neuve, BelgiumHQ checked Sep 19, 2026	51-200	42 contacts →
	Indirect evidence “L’ASBL Natagriwal a pour mission d’informer, de conseiller et d’encadrer les agriculteurs, les forestiers et les propriétaires publics ou privés à propos du programme…” Source: RevenueBase Database · checked Sep 19, 2026
18	Regionaal Landschap Kempen EN Maasland VZW	Indirect evidence	Genk, BelgiumHQ checked Sep 19, 2026	11-50	38 contacts →
	Indirect evidence “Regionaal Landschap Kempen en Maasland vzw bouwt als samenwerkingsverband al meer dan 30 jaar aan een landschap waarin we natuur, erfgoed én mens respectvol verbinden en de nodige…” Source: RevenueBase Database · checked Sep 19, 2026
19	River Cleanup	Indirect evidence	Antwerp, BelgiumHQ checked Sep 19, 2026	11-50	34 contacts →
	Indirect evidence “Every year, 127 billion kilograms of plastic end up in nature & rivers.” Source: RevenueBase Database · checked Sep 19, 2026
20	Canopea	Indirect evidence	Namur, BelgiumHQ checked Sep 19, 2026	11-50	33 contacts →
	Indirect evidence “Fondée en 1974, Canopea (ancien Inter-Environnement Wallonie) est la fédération des associations environnementales belges (avec plus de 130 associations et ONG environnementales…” Source: RevenueBase Database · checked Sep 19, 2026
21	Seas At Risk	Strong evidence	Saint-josse-ten-noode, BelgiumHQ checked Sep 19, 2026	11-50	32 contacts →
	Strong evidence “Seas At Risk is a Brussels-based NGO campaigning for the protection and restoration of the marine environment.” Source: RevenueBase Database · checked Sep 19, 2026
22	Lokaal Bestuur Grobbendonk	Indirect evidence	Grobbendonk, BelgiumHQ checked Sep 19, 2026	201-500	32 contacts →
	Indirect evidence “Missie Grobbendonk ademt natuur en cultuur en heeft een groots verleden.” Source: RevenueBase Database · checked Sep 19, 2026
23	RDC Environment	Strong evidence	Brussels, BelgiumHQ checked Sep 19, 2026	11-50	31 contacts →
	Strong evidence “Our mission is to support decision-making towards a sustainable world." – Bernard De Caevel, Founder of RDC Environment For more than 30 years, RDC Environment has been helping…” Source: RevenueBase Database · checked Sep 19, 2026
24	Fern NGO	Indirect evidence	Brussels, BelgiumHQ checked Sep 19, 2026	11-50	30 contacts →
	Indirect evidence “Fern is an international non-governmental organisation created in 1995 to keep track of the EU’s involvement in forests and to co-ordinate NGO activities at the European level.” Source: RevenueBase Database · checked Sep 19, 2026
25	Bellona Europa	Strong evidence	Brussels, BelgiumHQ checked Sep 19, 2026	11-50	29 contacts →
	Strong evidence “Bellona Europa is an independent, non-profit organisation that meets environmental and climate challenges head on.” Source: RevenueBase Database · checked Sep 19, 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: environmental organizations. 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 environmental organizations.
Partial evidence: Its own public description names part of environmental organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental organizations. 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 340 environmental organizations based in Belgium

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Environmental organizations based in Belgium at a glance

As of Sep 19, 2026

44.6%Verified-email coverage

12.5Average contacts per company

1-10Median size (employees)

11.5%Largest-city concentration · Brussels

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

242

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for Belgium, so it is reported there. Company counts and contact totals on this page are exact for Belgium, over 340 companies.

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 environmental organizations, 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.
What qualifies: Companies headquartered in Belgium whose own description of what they do matches “environmental organizations”. 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 environmental organizations), 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 environmental organizations, and records with no verified work email. Companies headquartered outside Belgium are excluded even when they keep an office there.
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, 1,894 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 19, 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.

Environmental organizations by metro

Environmental organizations in Brussels39

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 environmental organizations, 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 environmental organizations are there based in Belgium?

RevenueBase identified 340 environmental organizations headquartered in Belgium 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?

Brussels Environment, headquartered in Belgium, tops this list with the largest team on record.

Which city has the most environmental organizations?

Brussels leads with 39 headquartered companies, followed by Bruxelles (18) and Gent (12).

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 1,894 verified decision-maker contacts tracked across these 340 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 19, 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.