Company lists · Data refreshed September 2026
Top 25 Ohs companies based in Türkiye
RevenueBase identified 658 ohs companies headquartered in Türkiye as of September 2026 and tracks 5,680 professional contacts across them, including 240 with verified work emails. Istanbul is the largest hub.
This list covers ohs companies 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 21, 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.
The 25 largest ohs companies based in Türkiye
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 205 contacts → | ||||
Indirect evidence “500 çalışanı olan Wellpoint bir sağlık grubudur… Ana şirketi, Platform OSGB, İSG (iş sağlığı ve güvenliği) sektörünün en büyüklerinden biri.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 201 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 155 contacts → | ||||
Indirect evidence “EXACONS Project and Contracting Inc; was founded in 2014, Istanbul based on the vision to become a Solution Partner in every phase of the industrial facility life cycle for local…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 115 contacts → | ||||
Indirect evidence “Merkezi Ankara’da bulunan Tepe İSG, 6331 sayılı İş Sağlığı ve Güvenliği Kanunu kapsamında Kocaeli, Ankara, Tekirdağ, Samsun, Antalya, Diyarbakır, Gaziantep, Manisa, Kayseri…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 113 contacts → | ||||
Indirect evidence “Çalışanların sağlığını ve güvenliğini korumanın sadece yasal zorunluluklara indirgenemeyeceğinin farkındayız.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 92 contacts → | ||||
Indirect evidence “Söz1″ İş Sağlığı ve İş Güvenliği Org.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 73 contacts → | ||||
Indirect evidence “1997 yılında, ülkemizde işçi sağlığı ve iş güvenliği uygulamalarını ve yönetimini geliştirme hedefiyle yola çıktık.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 57 contacts → | ||||
Indirect evidence “TorkCheck which is a company of Mağdenli is established to be a technical and commercial solution partner to the customers with the principles such as reliability & honesty…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 51 contacts → | ||||
Indirect evidence “İş sağlığı ve güvenliği sektöründe tüm hizmetleri tek elden sunan bir iş sağlığı ve güvenliği merkezidir.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 46 contacts → | ||||
Indirect evidence “Gelişim OSGB, 2013 yılı başında Kadıköy/İstanbul'da kurulmuştur.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 34 contacts → | ||||
Indirect evidence “Established in 2008, Encore is a group of companies that has been serving the construction industry in specific fields.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 31 contacts → | ||||
Indirect evidence “2013 yılından itibaren çalışma hayatına “sağlık ve güvenlik” eliyle dokunuyoruz; bilginin ışığında ve tecrübelerimizin bize kattığı güvenle.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 24 contacts → | ||||
Indirect evidence “DERECE OSGB & İLKYARDIM olarak, 2017'den bu yana Türkiye'nin iş güvenliği ve sağlığı alanında güvenilir çözüm ortağıyız.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 24 contacts → | ||||
Indirect evidence “Özlem Akademi SEVESO Direktifi, İş Sağlığı ve Güvenliği, Makine Emniyeti, Proses Emniyeti, İş Sağlığı ve Güvenliği, Atex Direktifleri vb.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 19 contacts → | ||||
Indirect evidence “AKSEL İş Sağlığı ve Güvenliği A.Ş, İş Sağlığı ve Güvenliği alanında yıllardır farklı firmalarda görev yapan tecrübeli uzman ve hekim kadrosuyla 2015 yılında kurulmuştur.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 18 contacts → | ||||
Indirect evidence “Turkey's leading provider of consultancy & training solutions for health, safety & environment Many organisations receive poor advice and pay too much through health, safety and…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 14 contacts → | ||||
Indirect evidence “T.C.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 13 contacts → | ||||
Indirect evidence “İşyeri̇ heki̇mi̇ hi̇zmetleri̇ i̇ş güvenli̇ği̇ uzmani hi̇zmetleri̇ di̇ğer sağlik personeli̇ hi̇zmetleri̇ mobi̇l sağlik hi̇zmetleri̇” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 12 contacts → | ||||
Indirect evidence “Cankurt OSGB İşverenler işyeri hekimi ve iş güvenliği uzmanını bünyelerinde istihdam edebilecekleri gibi, Ortak Sağlık ve Güvenlik Birimi (OSGB) Belgesi bulunan kuruluşlardan da…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 12 contacts → | ||||
Indirect evidence “İş Sağlığı ve Güvenliği Eğitim ve Danışmanlık - Kişisel Koruyucu Malzeme - İlk Yardım Eğitimleri - İSG Profesyonelleri Eğitimleri - İş Sağlığı ve Güvenliği Kültür Programları -…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 11 contacts → | ||||
Indirect evidence “Lokman Hekim OSGB, alanında deneyimli danışmanların bir araya gelmesiyle oluşmuştur.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 10 contacts → | ||||
Strong evidence “OHS TRAINING I CONSULTING I AUDITING I INSPECTION I EQUIPMENT I OPERATION GWO I IRATA I SPRAT I ERCA I Working at Height I Confined Space I Scaffolding I Rigging Lifting I PPE…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 9 contacts → | ||||
Indirect evidence “Bera İş Sağlığı ve Güvenliği Hizmetleri Limited Şirketi, 2021 yılında İstanbul Büyükçekmece merkezli olarak faaliyetlerine başlamıştır.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 8 contacts → | ||||
Indirect evidence “iş sağlığı ve iş güvenliği” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 7 contacts → | ||||
Indirect evidence “BBU® Safety Equipments Ege Imbat Co.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
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: ohs companies. 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 ohs companies.
- Partial evidence
- Its own public description names part of ohs companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name ohs companies. 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 658 ohs companies based in Türkiye
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Ohs companies based in Türkiye at a glance
As of Sep 21, 2026Companies by employee count
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 658 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 ohs companies, 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 “ohs companies”. 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 ohs companies), 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 ohs companies, 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, 240 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.
Ohs companies by metro
- Ohs companies in Istanbul140
- Ohs companies in Ankara43
- Ohs companies in Izmir31
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 ohs companies, 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 ohs companies are there based in Türkiye?
RevenueBase identified 658 ohs companies 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?
Wellpoint, headquartered in Istanbul, tops this list with the largest team on record.
Which city has the most ohs companies?
Istanbul leads with 140 headquartered companies, followed by Ankara (43) and Izmir (31).
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 240 verified decision-maker contacts tracked across these 658 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.
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