Company lists · Data refreshed September 2026

Top 25 International development nonprofits based in Türkiye

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 102 companies tracked

RevenueBase identified 102 international development nonprofits headquartered in Türkiye as of September 2026 and tracks 1,684 professional contacts across them, including 257 with verified work emails. Istanbul is the largest hub.

This list covers international development nonprofits headquartered in Türkiye, 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 20, 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 20, 2026 86% judged on-target in blind review

102Companies

1,684Contacts tracked

257Verified emails

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The 25 largest international development nonprofits based in Türkiye

Ranked by team size

Top 25 of 102 international development nonprofits based in Türkiye, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to international 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	Habitat Derneği	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 20, 2026	n/a	420 contacts →
	Indirect evidence “Habitat Derneği (Habitat) sürdürülebilir kalkınma alanında çalışan bir sivil toplum kuruluşudur.” Source: RevenueBase Database · checked Sep 20, 2026
2	Humanitarian Relief Association IYD	Partial evidence	غازي عنتاب, TürkiyeHQ checked Sep 20, 2026	1,001-5,000	223 contacts →
	Partial evidence “IYD is a Turkish, non-governmental, and non-profit organization which has no political association working in various fields of humanitarian relief and development.” Source: RevenueBase Database · checked Sep 20, 2026
3	AÇEV	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 20, 2026	51-200	152 contacts →
	Indirect evidence “AÇEV 30 yıldır, erken yaştaki her çocuğun güvende, sağlıklı, mutlu, öğreniyor ve destekleniyor olması için çalışıyor.” Source: RevenueBase Database · checked Sep 20, 2026
4	Yeryüzü Doktorları Doctors Worldwide Türkiye	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 20, 2026	501-1,000	103 contacts →
	Indirect evidence “Sağlık alanına odaklanmış uluslararası bir insani yardım kuruluşu olarak çalışmalarına başlayan Yeryüzü Doktorları; 400 binden fazla bağışçısının ve 45 bini aşkın gönüllüsünün…” Source: RevenueBase Database · checked Sep 20, 2026
5	International Association For Relief And Development Onsur	Strong evidence	Gaziantep, TürkiyeHQ checked Sep 20, 2026	51-200	83 contacts →
	Strong evidence “The International Association for Relief and Development (ONSUR) is a non-governmental organization registered in Turkey under the registration number (27-018-178), which deals…” Source: RevenueBase Database · checked Sep 20, 2026
6	180 Degrees Consulting Bogazici	Indirect evidence	Bogazici University, TürkiyeHQ checked Sep 20, 2026	11-50	78 contacts →
	Indirect evidence “180 Degrees Consulting is the largest consultancy run by students, focusing on non-profits and social enterprises.” Source: RevenueBase Database · checked Sep 20, 2026
7	Binaa For Development	Partial evidence	Gaziantep, TürkiyeHQ checked Sep 20, 2026	51-200	70 contacts →
	Partial evidence “BINAA Organization stems from the concept of comprehensive development as a basis for its work, through the implementation of projects in the major pillars of the development…” Source: RevenueBase Database · checked Sep 20, 2026
8	IDEMA	Strong evidence	İstanbul, TürkiyeHQ checked Sep 20, 2026	11-50	33 contacts →
	Strong evidence “IDEMA International Development Management IDEMA has been cultivating, executing and managing social development projects in and out of Turkey since 2011.” Source: RevenueBase Database · checked Sep 20, 2026
9	World Human Relief	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 20, 2026	501-1,000	28 contacts →
	Indirect evidence “Yoksulluğun ve şiddetin her türünün eğitimle üstesinden gelinebileceği inancıyla toplumu şiddete ve travmaya karşı bilinçlendirerek ortak vicdan inşa ediyor, dezavantajlı…” Source: RevenueBase Database · checked Sep 20, 2026
10	Pikan Ajans	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 20, 2026	11-50	27 contacts →
	Indirect evidence “Önceliğimiz sivil toplum kuruluşları.” Source: RevenueBase Database · checked Sep 20, 2026
11	İNGEV	Indirect evidence	Atasehir, TürkiyeHQ checked Sep 20, 2026	11-50	25 contacts →
	Indirect evidence “İnsani Gelişme Vakfı (İNGEV) ülkemizde insani gelişmeye katkı yapmak üzere kurulmuştur.” Source: RevenueBase Database · checked Sep 20, 2026
12	Human Resource Development Foundation İnsan Kaynağını Geliştirme Vakfı	Partial evidence	İstanbul, TürkiyeHQ checked Sep 20, 2026	51-200	22 contacts →
	Partial evidence “Human Resource Development Foundation (HRDF) is a leading non-profit, non-governmental and autonomous organization in Turkey.” Source: RevenueBase Database · checked Sep 20, 2026
13	Innovative Solutions For Sustainable Development	Partial evidence	İstanbul, TürkiyeHQ checked Sep 20, 2026	11-50	20 contacts →
	Partial evidence “As ISSDA, since 2015, we have been carrying out various projects that serve sustainable development goals.” Source: RevenueBase Database · checked Sep 20, 2026
14	KUDRA	Partial evidence	Gaziantep, TürkiyeHQ checked Sep 20, 2026	11-50	13 contacts →
	Partial evidence “Kudra is a non-profit organization dedicated to the community's long-term development through innovative social, institutional, and economic empowerment initiatives” Source: RevenueBase Database · checked Sep 20, 2026
15	Çare Derneği	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 20, 2026	201-500	11 contacts →
	Indirect evidence “Çare Yardımlaşma ve Kalkınma Derneği, Dünyanın dört bir yanında insanlığın saadeti için birçok proje, yardım ve hizmetlerde bulunmuş gönüllülerin yaptıkları yardımları resmi bir…” Source: RevenueBase Database · checked Sep 20, 2026
16	Tawakkol Karman Foundation	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 20, 2026	11-50	11 contacts →
	Indirect evidence “On 20 December 2016, Tawakkol Karman Foundation was established, carrying various objectives, visions, and projects that target human being wherever they are.” Source: RevenueBase Database · checked Sep 20, 2026
17	Seed Organization	Partial evidence	Istanbul, TürkiyeHQ checked Sep 20, 2026	11-50	8 contacts →
	Partial evidence “SEED is a not-for-profit organization, specialized in economic empowerment and sustainable development, working towards social empowerment, improvement of standards of living, and…” Source: RevenueBase Database · checked Sep 20, 2026
18	Ufuk International Relief & Development	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 20, 2026	11-50	8 contacts →
	Indirect evidence “مؤسسة إنسانية مستقلة غير ربحية إغاثية تنموية، تعمل وفقاً لمبادئ العمل الإنساني لتلبية احتياجات المجتمعات وتنميتها والنهوض بها.” Source: RevenueBase Database · checked Sep 20, 2026
19	Idea Universal	Strong evidence	Rasimpasa, TürkiyeHQ checked Sep 20, 2026	11-50	7 contacts →
	Strong evidence “IDEA Universal (International Association for Development and Environment) was founded by volunteers who dream of a better, just, the equitable and peaceful world carries out…” Source: RevenueBase Database · checked Sep 20, 2026
20	Innovation For Development	Partial evidence	Istanbul, TürkiyeHQ checked Sep 20, 2026	1-10	7 contacts →
	Partial evidence “The development sector faces particular hurdles that derive from the complexity of global problems.” Source: RevenueBase Database · checked Sep 20, 2026
21	Nirengi Derneği	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 20, 2026	11-50	7 contacts →
	Indirect evidence “Nirengi Derneği Psiko-sosyal destek, İnsani Yardım-Afet ve Acil Durum Yönetimi ve Kalkınma, Risk Altındaki Gruplara Yönelik Doğrudan Destekleme, Savunuculuk ve Ağ Oluşturmak…” Source: RevenueBase Database · checked Sep 20, 2026
22	Sgdd-Asam	Indirect evidence	Alabayır/van Merkez/van, TürkiyeHQ checked Sep 20, 2026	1-10	6 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
23	Tanecs	Strong evidence	Ankara, TürkiyeHQ checked Sep 20, 2026	11-50	4 contacts →
	Strong evidence “around the world Focused mainly on internationally-funded development and investment projects, our services are designed for multilateral development banks, international funding…” Source: RevenueBase Database · checked Sep 20, 2026
24	Nezir Derneği	Indirect evidence	Sultanbeyli, TürkiyeHQ checked Sep 20, 2026	11-50	4 contacts →
	Indirect evidence “Nezir Derneği olarak başta ülkemiz olmak üzere dünyanın pek çok farklı bölgesinde insani yardım projeleri hayata geçiren bir kurum olarak çalışmalarımızı sürdürmekteyiz.” Source: RevenueBase Database · checked Sep 20, 2026
25	Rhea Consulting	Indirect evidence	Kadikoy, TürkiyeHQ checked Sep 20, 2026	1-10	2 contacts →
	Indirect evidence “Biz; Rhea.” Source: RevenueBase Database · checked Sep 20, 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: international 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 international development nonprofits.
Partial evidence: Its own public description names part of international development nonprofits, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name international 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 102 international development nonprofits based in Türkiye

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International development nonprofits based in Türkiye at a glance

As of Sep 20, 2026

15.3%Verified-email coverage

16.5Average contacts per company

11-50Median size (employees)

40.2%Largest-city concentration · Istanbul

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Türkiye, so it is reported there. Company counts and contact totals on this page are exact for Türkiye, over 102 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 international 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 Türkiye whose own description of what they do matches “international 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 international 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 international development nonprofits, and records with no verified work email. Companies headquartered outside Türkiye 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, 257 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 20, 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.

International development nonprofits by metro

International development nonprofits in Istanbul41

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 international 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 international development nonprofits are there based in Türkiye?

RevenueBase identified 102 international development nonprofits headquartered in Türkiye 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?

Habitat Derneği, headquartered in Türkiye, tops this list with the largest team on record.

Which city has the most international development nonprofits?

Istanbul leads with 41 headquartered companies, followed by Ankara (14) and Gaziantep (6).

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 257 verified decision-maker contacts tracked across these 102 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 20, 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.