Company lists · Data refreshed September 2026

Top 25 Sustainable development nonprofits based in Italy

Name: Sustainable development nonprofits based in Italy
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 181 companies tracked

RevenueBase identified 181 sustainable development nonprofits headquartered in Italy as of September 2026 and tracks 1,376 professional contacts across them, including 357 with verified work emails. Milan is the largest hub.

This list covers sustainable development nonprofits headquartered in Italy, 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 22, 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 22, 2026 86% judged on-target in blind review

181Companies

1,376Contacts tracked

357Verified emails

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The 25 largest sustainable development nonprofits based in Italy

Ranked by team size

Top 25 of 181 sustainable development nonprofits based in Italy, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to sustainable development nonprofits: 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	Legambiente	Indirect evidence	Rome, ItalyHQ checked Sep 22, 2026	51-200	201 contacts →
	Indirect evidence “Legambiente is the most widespread environmental organization in Italy.” Source: RevenueBase Database · checked Sep 22, 2026
2	EIIS	Strong evidence	Rome, ItalyHQ checked Sep 22, 2026	51-200	88 contacts →
	Strong evidence “We educate individuals and companies on the changes needed to achieve sustainable development.” Source: RevenueBase Database · checked Sep 22, 2026
3	Istituto Oikos	Indirect evidence	Milano, ItalyHQ checked Sep 22, 2026	51-200	84 contacts →
	Indirect evidence “Istituto Oikos è un'organizzazione non-profit impegnata in Europa e nei paesi del Sud del mondo nella tutela della biodiversità, per una gestione responsabile delle risorse…” Source: RevenueBase Database · checked Sep 22, 2026
4	Easysustainability	Indirect evidence	Remote Global Community, ItalyHQ checked Sep 22, 2026	n/a	34 contacts →
	Indirect evidence “Easysustainability is a non-profit organisation that serves the cause of helping youth land greener jobs.” Source: RevenueBase Database · checked Sep 22, 2026
5	Iwell Group	Indirect evidence	Villafranca Di Verona, ItalyHQ checked Sep 22, 2026	51-200	23 contacts →
	Indirect evidence “Iwell rappresenta un insieme di realtà che sposa una visione comune: garantire un futuro migliore al nostro pianeta grazie a scelte consapevoli ed ecologiche.” Source: RevenueBase Database · checked Sep 22, 2026
6	Distretti Ecologici S.P.A	Indirect evidence	Roma, ItalyHQ checked Sep 22, 2026	51-200	18 contacts →
	Indirect evidence “Azienda specializzata nel Green, nella Bio Edilizia e nell’Efficientamento Energetico.” Source: RevenueBase Database · checked Sep 22, 2026
7	Save The Planet	Indirect evidence	Firenze, ItalyHQ checked Sep 22, 2026	1-10	16 contacts →
	Indirect evidence “Save The Planet è una Associazione di Promozione Sociale (APS) che si impegna a risolvere le problematiche ambientali, sensibilizzando l’uomo sull’importanza delle sue azioni…” Source: RevenueBase Database · checked Sep 22, 2026
8	Barra&barra	Indirect evidence	Centallo, ItalyHQ checked Sep 22, 2026	11-50	15 contacts →
	Indirect evidence “Immaginiamo un futuro in cui il settore edile non rappresenti più una delle prime forme di inquinamento del Pianeta.” Source: RevenueBase Database · checked Sep 22, 2026
9	Fondazione MPS	Indirect evidence	Siena, ItalyHQ checked Sep 22, 2026	11-50	12 contacts →
	Indirect evidence “Fondazione non profit costituita nel 1995 per lo sviluppo sostenibile della comunità attraverso inclusione, cultura, ricerca scientifica e valorizzazione del territorio.” Source: RevenueBase Database · checked Sep 22, 2026
10	Walden SRL	Indirect evidence	Cardè, ItalyHQ checked Sep 22, 2026	1-10	11 contacts →
	Indirect evidence “Foreste, idee e comunità a forma di futuro.” Source: RevenueBase Database · checked Sep 22, 2026
11	OPEN	Indirect evidence	Milan, ItalyHQ checked Sep 22, 2026	1-10	10 contacts →
	Indirect evidence “Open – Operation Energy Srl, nasce nel 2018 con l’obiettivo di promuovere progetti sostenibili legati alla diffusione delle energie rinnovabili.” Source: RevenueBase Database · checked Sep 22, 2026
12	STAES	Indirect evidence	Roma, ItalyHQ checked Sep 22, 2026	11-50	10 contacts →
	Indirect evidence “L’obiettivo del raggiungimento dello Sviluppo Sostenibile è stato il principio su cui è stata fondata nel 1979 la STAES.” Source: RevenueBase Database · checked Sep 22, 2026
13	Citiculture	Partial evidence	Turin, ItalyHQ checked Sep 22, 2026	11-50	10 contacts →
	Partial evidence “Much more than just a company, we're a community committed to sustainable urban transformation.” Source: RevenueBase Database · checked Sep 22, 2026
14	Ambienteacqua APS	Indirect evidence	Milan, ItalyHQ checked Sep 22, 2026	1-10	10 contacts →
	Indirect evidence “L’Associazione ambientalista di Promozione Sociale AmbienteAcqua è un’organizzazione senza scopo di lucro fondata nel che opera a livello nazionale e in particolare in Lombardia.” Source: RevenueBase Database · checked Sep 22, 2026
15	Kallipolis APS	Partial evidence	Trieste, ItalyHQ checked Sep 22, 2026	1-10	9 contacts →
	Partial evidence “Kallipolis is a nonprofit organization that aims at improving livability in urban contexts through the approach of social urbanism.” Source: RevenueBase Database · checked Sep 22, 2026
16	Smart Venice	Indirect evidence	Veneto, ItalyHQ checked Sep 22, 2026	1-10	9 contacts →
	Indirect evidence “SmartVenice was founded in 2014 on the initiative of professionals with multidisciplinary local and international expertise inspired by the idea of fostering new patterns of…” Source: RevenueBase Database · checked Sep 22, 2026
17	Whatmatters SRL Società Benefit	Partial evidence	Gallarate, ItalyHQ checked Sep 22, 2026	1-10	8 contacts →
	Partial evidence “We're led by a purpose: to create solutions for corporate sustainability and help young generations growing in a sustainable environment.” Source: RevenueBase Database · checked Sep 22, 2026
18	Cast ONG	Indirect evidence	Laveno Mombello, ItalyHQ checked Sep 22, 2026	1-10	8 contacts →
	Indirect evidence “Da 35 anni CAST – Centro per un Appropriato Sviluppo Tecnologico - lavora perché acqua, energia e cibo siano disponibili, accessibili e sicuri sia nel Sud che nel Nord del mondo.” Source: RevenueBase Database · checked Sep 22, 2026
19	Creda Onlus	Indirect evidence	ItalyHQ checked Sep 22, 2026	1-10	8 contacts →
	Indirect evidence “CREDA onlus (Centro Ricerca Educazione Documentazione Ambientale is a accredited association founded by WWF (World Wildlife Found), Agesci (Association of Italian Guides and…” Source: RevenueBase Database · checked Sep 22, 2026
20	Insula NET	Indirect evidence	Milan, ItalyHQ checked Sep 22, 2026	1-10	8 contacts →
	Indirect evidence “Trasformiamo quartieri e unità immobiliari in comunità abitative efficienti, promuovendo un nuovo modello italiano di vivibilità e convivenza virtuosa.” Source: RevenueBase Database · checked Sep 22, 2026
21	Terralab	Indirect evidence	Milan, ItalyHQ checked Sep 22, 2026	11-50	7 contacts →
	Indirect evidence “TerraLab è un'associazione di tutela ambientale senza scopo di lucro che promuove stili di vita sostenibili sia attraverso il coinvolgimento attivo della comunità sul territorio…” Source: RevenueBase Database · checked Sep 22, 2026
22	Voice Over Foundation	Indirect evidence	Milan, ItalyHQ checked Sep 22, 2026	1-10	7 contacts →
	Indirect evidence “We promote Social and Environmental Justice through advocacy initiatives and empowerment projects.” Source: RevenueBase Database · checked Sep 22, 2026
23	Circular	Strong evidence	Palermo, ItalyHQ checked Sep 22, 2026	1-10	7 contacts →
	Strong evidence “In the 1980s, a new model of growth affecting the environmental, economic and socio-cultural spheres, a global Sustainable Development Pact, was universally adopted.” Source: RevenueBase Database · checked Sep 22, 2026
24	Be-Boost	Indirect evidence	Milano, ItalyHQ checked Sep 22, 2026	1-10	6 contacts →
	Indirect evidence “Diamo a persone e aziende i superpoteri per attraversare le grandi transizioni dell'epoca, AI e sostenibilità.” Source: RevenueBase Database · checked Sep 22, 2026
25	Associazione Animaimpresa	Indirect evidence	Torreano Di Martignacco, ItalyHQ checked Sep 22, 2026	1-10	6 contacts →
	Indirect evidence “Animaimpresa è un'associazione formata da imprese e professionisti, impegnata nel promuovere la cultura della CSR e della Sostenibilità Strategica attraverso eventi, formazione e…” Source: RevenueBase Database · checked Sep 22, 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: sustainable development nonprofits. 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 sustainable development nonprofits.
Partial evidence: Its own public description names part of sustainable development nonprofits, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainable development nonprofits. 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 181 sustainable development nonprofits based in Italy

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Sustainable development nonprofits based in Italy at a glance

As of Sep 22, 2026

25.9%Verified-email coverage

7.6Average contacts per company

1-10Median size (employees)

9.4%Largest-city concentration · Milan

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

130

11-50

51-200

201-500

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for Italy, so it is reported there. Company counts and contact totals on this page are exact for Italy, over 181 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 sustainable development nonprofits, 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 Italy whose own description of what they do matches “sustainable development nonprofits”. 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 sustainable development nonprofits), 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 sustainable development nonprofits, and records with no verified work email. Companies headquartered outside Italy 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, 357 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 22, 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.

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 sustainable development nonprofits, 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 sustainable development nonprofits are there based in Italy?

RevenueBase identified 181 sustainable development nonprofits headquartered in Italy 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?

Legambiente, headquartered in Rome, tops this list with the largest team on record.

Which city has the most sustainable development nonprofits?

Milan leads with 17 headquartered companies, followed by Milano (16) and Roma (16).

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 357 verified decision-maker contacts tracked across these 181 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 22, 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.