Company lists · Data refreshed September 2026

Top 13 Transit infrastructure contractors based in Türkiye

RevenueBase identified 76 transit infrastructure contractors headquartered in Türkiye as of September 2026 and tracks 4,377 professional contacts across them, including 630 with verified work emails. Ankara is the largest hub.

This list covers transit infrastructure contractors 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 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
76Companies
4,377Contacts tracked
630Verified emails
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The 13 largest transit infrastructure contractors based in Türkiye

Ranked by team size
Top 13 of 76 transit infrastructure contractors based in Türkiye, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to transit infrastructure contractors: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceAnkara, TürkiyeHQ checked Sep 19, 20265,001-10,0001,046 contacts →

Partial 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 19, 2026
2Strong evidenceIstanbul, TürkiyeHQ checked Sep 19, 20261,001-5,000673 contacts →

Strong 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 19, 2026
3Indirect evidenceIstanbul, TürkiyeHQ checked Sep 19, 20265,001-10,000516 contacts →

Indirect evidence

“NUROL CONSTRUCTION AND TRADING CO.”

Source: RevenueBase Database · checked Sep 19, 2026
4Indirect evidenceAnkara, TürkiyeHQ checked Sep 19, 20265,001-10,000481 contacts →

Indirect evidence

“Global Excellence.”

Source: RevenueBase Database · checked Sep 19, 2026
5Indirect evidenceAnkara, TürkiyeHQ checked Sep 19, 20265,001-10,000475 contacts →

Indirect evidence

“Fernas is a Turkey based company currentlyFounded in 1982, Fernas Construction is the Group's locomotive company.”

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceİstanbul, TürkiyeHQ checked Sep 19, 20261,001-5,000175 contacts →

Indirect evidence

“Özgün İnşaat, leading company of KRK Holding, was established in 1993.”

Source: RevenueBase Database · checked Sep 19, 2026
7Indirect evidenceÜsküdar, TürkiyeHQ checked Sep 19, 202651-20092 contacts →

Indirect evidence

“Yapı Merkezi İDİS (İzleme Denetim & İletişim Sistemleri) A.Ş.”

Source: RevenueBase Database · checked Sep 19, 2026
8Partial evidenceIzmir, TürkiyeHQ checked Sep 19, 2026201-50058 contacts →

Partial evidence

“DERE Construction has been established to serve both for public and private sector investments as a contractor, and continues its activities with an increasing acceleration.”

Source: RevenueBase Database · checked Sep 19, 2026
9Indirect evidenceİstanbul, TürkiyeHQ checked Sep 19, 202651-20025 contacts →

Indirect evidence

“İnşaat sektöründeki 50 yıllık tecrübemizin arkasında, faaliyet süremiz boyunca devlet sektöründe iş yapmanın saygınlığı ve haklı gururu bulunmaktadır.”

Source: RevenueBase Database · checked Sep 19, 2026
10Indirect evidenceEyup, TürkiyeHQ checked Sep 19, 202611-5023 contacts →

Indirect evidence

“ASL İnşaat, çeyrek asırlık tecrübe ve bilgi birikimi ile konut, yol, köprü, havalimanı, enerji, muhtelif projeler ve kentsel altyapı konularında genel müteahhitlik ve taahhüt…”

Source: RevenueBase Database · checked Sep 19, 2026
11Indirect evidenceÇankaya, TürkiyeHQ checked Sep 19, 202611-507 contacts →

Indirect evidence

“Dedicated teams to make difference!”

Source: RevenueBase Database · checked Sep 19, 2026
12Indirect evidenceİstanbul, TürkiyeHQ checked Sep 19, 202611-501 contacts →

Indirect evidence

“2012 yılında kurulmuş olan şirketimiz başta Devlet Su işleri olmak üzere bir çok kamu kurumuna taahhütte bulunarak; devletten gelen 35 yıllık deneyimimizi sahalara aktarmaktayız.”

Source: RevenueBase Database · checked Sep 19, 2026
13Indirect evidenceBesiktas, TürkiyeHQ checked Sep 19, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026

Showing 13 of 76 transit infrastructure contractors based in Türkiye

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Transit infrastructure contractors based in Türkiye at a glance

As of Sep 19, 2026
14.4%Verified-email coverage
57.6Average contacts per company
51-200Median size (employees)
21.1%Largest-city concentration · Ankara
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
12
11-50
19
51-200
17
201-500
12
501-1,000
7
1,001-5,000
4
5,001-10,000
5

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 76 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 transit infrastructure contractors, 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 “transit infrastructure contractors”. 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 transit infrastructure contractors), 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 transit infrastructure contractors, 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, 630 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.

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 transit infrastructure contractors, 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 transit infrastructure contractors are there based in Türkiye?

RevenueBase identified 76 transit infrastructure contractors 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?

Gülermak Heavy Industries Construction Contracting CO INC, headquartered in Ankara, tops this list with the largest team on record.

Which city has the most transit infrastructure contractors?

Ankara leads with 16 headquartered companies, followed by Istanbul (16) and Cankaya (7).

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 630 verified decision-maker contacts tracked across these 76 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.