Company lists · Data refreshed November 2026

Top 25 Oil and gas engineering firms based in Türkiye

RevenueBase identified 857 company matches for oil and gas engineering firms associated with Türkiye as of November 2026 and tracks 13,807 professional contacts across them, including 1,968 with verified work emails. Istanbul is the largest hub.

This list covers company matches for oil and gas engineering firms associated with Türkiye, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 4, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 4, 2026 How this list was built
857Companies
13,807Contacts tracked
1,968Verified emails
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The 25 largest oil and gas engineering firms based in Türkiye

Ranked by team size
Top 25 of 857 company matches for oil and gas engineering firms based in Türkiye, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 4, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchÇankaya, TürkiyeHQ recorded Nov 4, 2026501-1,0001,813 contacts →

Exact match

“TP-OTC is established to provide all engineering and technology services for offshore operations in oil and gas industry.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
2Exact matchIstanbul, TürkiyeHQ recorded Nov 4, 202610001+1,510 contacts →

Exact match

“Rönesans Endüstri Tesisleri specializes in construction services and EPC in Hydrocarbons, Power, Metallurgy & Mining and Process Plants sectors.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
3Exact matchIstanbul, TürkiyeHQ recorded Nov 4, 20261,001-5,000369 contacts →

Exact match

“Headquartered in Istanbul / Turkey, Teknokon Group is a multi-disciplinary organization serving its clientele with a full range of engineering, procurement and construction for…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
4Exact matchAnkara, TürkiyeHQ recorded Nov 4, 20265,001-10,000322 contacts →

Exact match

“EKON is a leading engineering & construction company for establishing infrastructure and integrated industrial projects from the planning and design stages, through engineering…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
5Exact matchIstanbul, TürkiyeHQ recorded Nov 4, 20261,001-5,000257 contacts →

Exact match

“Welcome to DEHA TECH Engineering & Contracting Group We provide engineering and contracting services all around the world with our experienced team.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
6Exact matchAnkara, TürkiyeHQ recorded Nov 4, 2026501-1,000207 contacts →

Exact match

“ELTEMTEK A.Ş olarak temel mühendislik hizmetlerinden, yatırım danışmanlığına; işletme hizmetlerine, sistem analiz etütlerine, harita ve kamulaştırma hizmetlerine uzanan geniş bir…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
7Exact matchAnkara, TürkiyeHQ recorded Nov 4, 2026201-500198 contacts →

Exact match

“Founded in 1985, Prota Engineering is a pioneering design firm with a global footprint, having executed over projects spanning across 25 countries, having offices in Turkey…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
8Exact matchAnkara, TürkiyeHQ recorded Nov 4, 2026201-500185 contacts →

Exact match

“Founded in 1971, DOLSAR is a multi-disciplinary engineering firm offering engineering, architectural, consultancy and supervision services for large-scale projects in a wide range…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
9Exact matchİstanbul, TürkiyeHQ recorded Nov 4, 2026501-1,000180 contacts →

Exact match

“ViTO Energy Engineering and Construction is an integrated EPC services provider for industrial projects.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
10Exact matchIstanbul, TürkiyeHQ recorded Nov 4, 2026201-500153 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
11Exact matchBesiktas, TürkiyeHQ recorded Nov 4, 202610001+135 contacts →

Exact match

“ENKA is a global engineering and construction firm headquartered in Istanbul, Turkey.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
12Exact matchAnkara, TürkiyeHQ recorded Nov 4, 202651-200106 contacts →

Exact match

“Enerji sektöründe ortaklarımızın özel sektörde yılların başından beri gerçekleştirdiği başarılı projeler ve edindiği tecrübelerden sonra, Istrich 2014 yılında müşterilerine enerji…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
13Exact matchAnkara, TürkiyeHQ recorded Nov 4, 202651-200105 contacts →

Exact match

“PROMER Müşavirlik Mühendislik A.Ş.® is an independent engineering-consultancy company offering various professional solutions and services for industries such as mining, power…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
14Exact matchÇankaya, TürkiyeHQ recorded Nov 4, 202651-20091 contacts →

Exact match

“Stadia Engineering and Consultancy was established in 2018.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
15Exact matchAnkara And Istanbul, TürkiyeHQ recorded Nov 4, 202651-20089 contacts →

Exact match

“Apco is a full-service engineering, consultancy and project management firm, established in 1987.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
16Exact matchAnkara, TürkiyeHQ recorded Nov 4, 202651-20078 contacts →

Exact match

“BİZ KİMİZ?”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
17Exact matchAtasehir, TürkiyeHQ recorded Nov 4, 2026501-1,00073 contacts →

Exact match

“Teknika Teknik Taahhüt A.Ş.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
18Exact matchBornova, TürkiyeHQ recorded Nov 4, 202611-5064 contacts →

Exact match

“At A Glance;* Oil & Gas Engineering Company,* Managed by Practicing Refinery Engineers,* Engineering Expertise that Minimizes Cost & Improves Process,* Over 100 Total Project…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
19Exact matchİstanbul, TürkiyeHQ recorded Nov 4, 202651-20063 contacts →

Exact match

“1998 yılından günümüze çevre koruma konusunda faaliyet gösteren Artemis Arıtım uluslararası bilgi ve tecrübeye sahip mühendisleri ve akademik danışmanlarıyla birçok başarılı…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
20Exact matchİstanbul, TürkiyeHQ recorded Nov 4, 2026201-50062 contacts →

Exact match

“Mod Endüstriyel Servisler, 2013 yılından bu yana enerji, petrokimya, rafineri, çimento, madencilik, tersane ve endüstriyel üretim tesislerine entegre servis çözümleri sunmaktadır.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
21Exact matchAnkara, TürkiyeHQ recorded Nov 4, 202651-20060 contacts →

Exact match

“EGESA Elektrik İnşaat Enerji Üretim A.Ş enerji sektörünün lider mühendislik ve taahhüt firmasıdır.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
22Exact matchAnkara, TürkiyeHQ recorded Nov 4, 202651-20060 contacts →

Exact match

“be is dedicated to providing sustainable engineering solutions and consultancy services in the fields of Renewables, Oil & Gas.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
23Exact matchİzmir, TürkiyeHQ recorded Nov 4, 202611-5045 contacts →

Exact match

“HESATEKNİK dönemin gelişmiş ve verimli teknoloji altyapılarını kullanarak, geleceğin endüstriyel ve enerji üretim tesislerini müşterilerine anahtar teslimi sunmayı, kesintisiz…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
24Exact matchIstanbul, TürkiyeHQ recorded Nov 4, 2026201-50041 contacts →

Exact match

“EPC, EPCM and LSTK Services Enprode's vast experience that has garnered across its core competencies speak for Enprode's credentials as a first-class provider of EPC-LSTK / EPCM…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
25Exact matchKocaeli, TürkiyeHQ recorded Nov 4, 2026201-50041 contacts →

Exact match

“Mühendislik alanında 20 yılı aşkın deneyime sahip olan dinamik ve çözüm odaklı grubumuz, küresel sanayiye hizmet vermek amacıyla kurulmuştur.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase

Showing 25 of 857 oil and gas engineering firms based in Türkiye

See the full list, filter by size, metro and specialty, and access 1,968 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oil and gas engineering firms based in Türkiye at a glance

As of Nov 4, 2026
14.3%Verified-email coverage
16.1Average contacts per company
11-50Median size (employees)
20.1%Largest-city concentration · Istanbul
Nov 4, 2026Page data refreshed

Companies by employee count

1-10
359
11-50
309
51-200
109
201-500
46
501-1,000
20
1,001-5,000
9
5,001-10,000
2
10001+
2

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 857 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Türkiye whose business descriptions match “oil and gas engineering firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,968 professional contacts with verified work emails across the full matched dataset. 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 November 4, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “oil and gas engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil and gas engineering firms are there based in Türkiye?

RevenueBase identified 857 company matches for oil and gas engineering firms associated with Türkiye as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Tp-Otc tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most oil and gas engineering firms?

Istanbul leads with 172 company records, followed by Ankara (105) and Cankaya (45).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,968 professional contacts with verified work emails tracked across these 857 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 4, 2026.

Ready to reach these companies? Verified emails and direct dials for all 857 oil and gas engineering firms based in Türkiye. Start with a free account, no credit card.

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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 SmartSearch, 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.