Company lists · Data refreshed September 2026
Top 25 Infrastructure conglomerates based in Türkiye
RevenueBase identified 729 infrastructure conglomerates headquartered in Türkiye as of September 2026 and tracks 57,687 professional contacts across them, including 6,693 with verified work emails. Istanbul is the largest hub.
This list covers infrastructure conglomerates 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.
The 25 largest infrastructure conglomerates based in Türkiye
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 5,599 contacts → | ||||
Indirect evidence “Merkezi, Ankara’da bulunan Rönesans Holding, dünyanın en büyük müteahhitlik şirketlerinin sıralandığı ENR listesinde dünyada 50.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 5,407 contacts → | ||||
Indirect evidence “Founded in 1957, ENKA is Türkiye’s largest construction company and has maintained its place among ENR’s Top International Contractors since 1981.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,852 contacts → | ||||
Indirect evidence “Yapı Merkezi, founded in 1965, aims "to create and to realize construction projects that will serve humanity by creating environments of happiness".” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,329 contacts → | ||||
Indirect evidence “Limak Group is a fast-growing international company headquartered in Turkey operating according to best operational practices across multiple major sectors such as energy…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 2,172 contacts → | ||||
Indirect evidence “Kolin, Türkiye'de ve üç kıtada gerçekleştirdiği dev projeler, inşaat ve enerji başta olmak üzere farklı sektörlerde yıllık 1,5 milyar dolar ciroyu yakalayan başarı grafiğiyle…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,583 contacts → | ||||
Indirect evidence “Doğuş Construction and Trade Inc.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,497 contacts → | ||||
Partial evidence “Sabancı Holding is one of Turkey’s leading conglomerate, engaged in a wide variety of business activities through its subsidiaries and affiliates, mainly in the banking, financial…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,138 contacts → | ||||
Indirect evidence “Kalyon Holding: Empowering Turkey’s Future Prioritizing contributions to people, society, and the environment, Kalyon Holding continues its journey in harmony with Turkey’s…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,046 contacts → | ||||
Indirect evidence “GÜLERMAK, since its establishment, has been a top leading international EPC contractor known for its excellent reputation and professionalism.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,006 contacts → | ||||
Indirect evidence “Yüksel Proje, established in 1978, provides design, engineering and consultancy services in Turkiye and 38 countries worldwide.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 985 contacts → | ||||
Indirect evidence “Temelleri 1954 yılına dayanan YDA Group; bünyesindeki ilk inşaat & taahhüt firması olan AKSA İnşaat ile 52 yılı; Group’un Onursal Başkanı ve Kurucusu rahmetli Yaşar Dede Arslan’ın…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 983 contacts → | ||||
Indirect evidence “MİTAŞ Endüstri Sanayi ve Ticaret A.Ş, MİTAŞ Grubu’nun ana kuruluşu olup köklerini 1955’te Ankara’da kurulan MİTAŞ Madeni İnşaat İşleri Türk A.Ş.’den almaktadır.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 938 contacts → | ||||
Indirect evidence “As a pioneer of change in Turkey, the Doğuş Group, founded in 1951, sets standards for a better living by being at the forefront of discoveries that shape modern life, capitalizes…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 924 contacts → | ||||
Indirect evidence “GAMA HOLDING A.Ş.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 854 contacts → | ||||
Indirect evidence “Temelleri 1970’te Türkiye Gazetesi’nin yayın hayatına başlamasıyla atılan İhlas Holding, yarım asrı aşan köklü geçmişinden aldığı güçle faaliyet gösterdiği her alanda…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 822 contacts → | ||||
Indirect evidence “1974 yılında başlayan yolculuğumuz boyunca, adımlarımızı hep en iyiye ulaşma ilkesiyle attık.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 818 contacts → | ||||
Indirect evidence “Renaissance Construction was founded in St.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 704 contacts → | ||||
Indirect evidence “Since its foundation in 1982, Fernas has played a strategic role in Turkey's journey towards industrialisation and development, drawing on nearly half a century of experience.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 673 contacts → | ||||
Partial evidence “Rightfully regarded as one of Turkey's leading contractor firms, Makyol is active in the areas of: • Heavy construction & infrastructure (highways, airports, dams, tunnels…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 562 contacts → | ||||
Indirect evidence “Founded in Yamata Investment made a distinguished name in the international area with the construction activities all over the world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 530 contacts → | ||||
Indirect evidence “1981 yılında Ahmet Çalık tarafından kurulan Çalık Holding enerji, inşaat, madencilik, tekstil, finans, telekomünikasyon ve dijital alanlarında faaliyet göstermektedir.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 516 contacts → | ||||
Indirect evidence “NUROL CONSTRUCTION AND TRADING CO.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 500 contacts → | ||||
Indirect evidence “It was the initiatives of our dear late founder Nuri Özaltın in the field of construction and contracting that laid the foundations of Özaltın Holding.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 487 contacts → | ||||
Indirect evidence “1969 yılında tekstil sektörüyle ticari yaşamına başlayan; Enerji, Kağıt, Ambalaj, Tekstil, Perakende ve Çimento alanlarında faaliyet gösteren Eren Holding ve bağlı şirketleri, öz…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 481 contacts → | ||||
Indirect evidence “Global Excellence.” Source: RevenueBase Database · checked Sep 20, 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: infrastructure conglomerates. 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 infrastructure conglomerates.
- Partial evidence
- Its own public description names part of infrastructure conglomerates, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name infrastructure conglomerates. 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 729 infrastructure conglomerates based in Türkiye
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Infrastructure conglomerates based in Türkiye at a glance
As of Sep 20, 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 729 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 infrastructure conglomerates, 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 “infrastructure conglomerates”. 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 infrastructure conglomerates), 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 infrastructure conglomerates, 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, 6,693 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.
Infrastructure conglomerates by metro
- Infrastructure conglomerates in Istanbul163
- Infrastructure conglomerates in Ankara152
- Infrastructure conglomerates in Cankaya56
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 infrastructure conglomerates, 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 infrastructure conglomerates are there based in Türkiye?
RevenueBase identified 729 infrastructure conglomerates 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?
Rönesans Holdi̇ng, headquartered in Ankara, tops this list with the largest team on record.
Which city has the most infrastructure conglomerates?
Istanbul leads with 163 headquartered companies, followed by Ankara (152) and Cankaya (56).
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 6,693 verified decision-maker contacts tracked across these 729 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.
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