Company lists · Data refreshed September 2026

Top 25 Refinery engineering firms based in Türkiye

Name: Refinery engineering firms based in Türkiye
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 837 companies tracked

RevenueBase identified 837 company matches for refinery engineering firms associated with Türkiye as of September 2026 and tracks 13,622 professional contacts across them, including 1,783 with verified work emails. Istanbul is the largest hub.

This list covers company matches for refinery 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 September 17, 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 Sep 17, 2026 How this list was built

837Companies

13,622Contacts tracked

1,783Verified emails

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The 25 largest refinery engineering firms based in Türkiye

Ranked by team size

Top 25 of 837 company matches for refinery engineering firms based in Türkiye, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Tp-Otc	Exact match	Çankaya, TürkiyeHQ recorded Sep 17, 2026	501-1,000	1,501 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 · Sep 17, 2026 · View company records in RevenueBase
2	Ronesans Endustri Tesisleri	Exact match	Istanbul, TürkiyeHQ recorded Sep 17, 2026	10001+	1,157 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 · Sep 17, 2026 · View company records in RevenueBase
3	Mapa Group	Exact match	Ankara, TürkiyeHQ recorded Sep 17, 2026	10001+	959 contacts →
	Exact match “Mapa Group has emerged as a global leader in the engineering and construction industry, now spanning three continents.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Teknokon Grup	Exact match	Istanbul, TürkiyeHQ recorded Sep 17, 2026	1,001-5,000	459 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 · Sep 17, 2026 · View company records in RevenueBase
5	AE Arma-Elektropanç	Exact match	Istanbul, TürkiyeHQ recorded Sep 17, 2026	10001+	429 contacts →
	Exact match “One of the strongest and leading companies of the Turkish engineering and contracting sector, ARMA ENGINEERING founded in 1986 and ELEKTROPANÇ ELECTRICAL INDUSTRY founded in 1991…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Tekfen Engineering	Exact match	Sisli, TürkiyeHQ recorded Sep 17, 2026	201-500	293 contacts →
	Exact match “Tekfen Engineering was founded in 1984 to provide engineering services for our parent company, Tekfen Construction.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Birlesim Muhendisik	Exact match	Istanbul, TürkiyeHQ recorded Sep 17, 2026	1,001-5,000	262 contacts →
	Exact match “BİRLEŞİM MÜHENDİSLİK established in year 2002, in İSTANBUL and achieved its present structure with the vast acceleration parallel to the present technologies and sector…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Koltek Consulting CO	Exact match	Ankara, TürkiyeHQ recorded Sep 17, 2026	501-1,000	253 contacts →
	Exact match “Established in 1988, KOLTEK is a technical consulting firm that offers multidisciplinary engineering services locally and abroad.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Deha Tech Makina SAN VE TIC A.S	Exact match	Istanbul, TürkiyeHQ recorded Sep 17, 2026	1,001-5,000	216 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 · Sep 17, 2026 · View company records in RevenueBase
10	Prota Engineering	Exact match	Ankara, TürkiyeHQ recorded Sep 17, 2026	201-500	164 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 · Sep 17, 2026 · View company records in RevenueBase
11	Dolsar Engineering Inc. CO	Exact match	Ankara, TürkiyeHQ recorded Sep 17, 2026	201-500	164 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 · Sep 17, 2026 · View company records in RevenueBase
12	Exacons	Exact match	Istanbul, TürkiyeHQ recorded Sep 17, 2026	201-500	155 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 · Sep 17, 2026 · View company records in RevenueBase
13	Tekmont	Exact match	Kocaeli̇, TürkiyeHQ recorded Sep 17, 2026	501-1,000	130 contacts →
	Exact match “Teknik Montaj Endüstri Tesisleri İmalat ve Montaj San.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Promer Consultancy Engineering INC	Exact match	Ankara, TürkiyeHQ recorded Sep 17, 2026	51-200	102 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 · Sep 17, 2026 · View company records in RevenueBase
15	Istrich	Exact match	Ankara, TürkiyeHQ recorded Sep 17, 2026	51-200	92 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 · Sep 17, 2026 · View company records in RevenueBase
16	Prizma Endüstri	Exact match	Ankara, TürkiyeHQ recorded Sep 17, 2026	201-500	82 contacts →
	Exact match “PRIZMA started operations in Ankara-Turkey in 2001.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Apco Teknik	Exact match	Ankara And Istanbul, TürkiyeHQ recorded Sep 17, 2026	51-200	81 contacts →
	Exact match “Apco is a full-service engineering, consultancy and project management firm, established in 1987.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Stadia Engineering	Exact match	Çankaya, TürkiyeHQ recorded Sep 17, 2026	51-200	77 contacts →
	Exact match “Stadia Engineering and Consultancy was established in 2018.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	MCA Yapi	Exact match	Istanbul, TürkiyeHQ recorded Sep 17, 2026	201-500	77 contacts →
	Exact match “MCA Yapı, 2010 yılında mekanik ve elektrik sistemlerde yüksek kaliteli mühendislik çözümleri sunmak amacıyla kurulmuştur.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Atak Engineering	Exact match	Ankara, TürkiyeHQ recorded Sep 17, 2026	501-1,000	75 contacts →
	Exact match “Atak Engineering was founded in 1988.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Teknika Teknik	Exact match	Atasehir, TürkiyeHQ recorded Sep 17, 2026	501-1,000	73 contacts →
	Exact match “Teknika Teknik Taahhüt A.Ş.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Ap-Cb	Exact match	Ankara, TürkiyeHQ recorded Sep 17, 2026	51-200	72 contacts →
	Exact match “BİZ KİMİZ?” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Rota Engineering	Exact match	Umraniye, TürkiyeHQ recorded Sep 17, 2026	51-200	67 contacts →
	Exact match “Comprehensive engineering, manufacturing and erection solutions for Gas-Fired Power Plants, WtE (Waste to Energy) Power Plants, Oil & Gas Petrochemical Plants, Refineries…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Famer Group	Exact match	Cankaya, TürkiyeHQ recorded Sep 17, 2026	51-200	67 contacts →
	Exact match “Famer Group is an international independent consulting company, offering Planning, Architectural, Engineering Design and Management services for construction projects.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	BE	Exact match	Ankara, TürkiyeHQ recorded Sep 17, 2026	51-200	64 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 · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “refinery engineering firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 837 refinery engineering firms based in Türkiye

See the full list, filter by size, metro and specialty, and access 1,783 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Refinery engineering firms based in Türkiye at a glance

As of Sep 17, 2026

13.1%Verified-email coverage

16.3Average contacts per company

11-50Median size (employees)

18.3%Largest-city concentration · Istanbul

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

363

11-50

296

51-200

101

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 837 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 “refinery 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 1,783 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 September 17, 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.

Refinery engineering firms by metro

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 “refinery engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many refinery engineering firms are there based in Türkiye?

RevenueBase identified 837 company matches for refinery engineering firms associated with Türkiye as of September 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 refinery engineering firms?

Istanbul leads with 153 company records, followed by Ankara (92) and Izmir (50).

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 1,783 professional contacts with verified work emails tracked across these 837 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 September 17, 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 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.