Company lists · Data refreshed October 2026

Top 12 Environmental consulting companies for oil and gas based in Iran

RevenueBase identified 233 company matches for environmental consulting companies for oil and gas associated with Iran as of October 2026 and tracks 7,895 professional contacts across them, including 23 with verified work emails. Tehran is the largest hub.

This list covers company matches for environmental consulting companies for oil and gas associated with Iran, 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 October 12, 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 Oct 12, 2026 How this list was built
233Companies
7,895Contacts tracked
23Verified emails
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The 12 largest environmental consulting companies for oil and gas based in Iran

Ranked by team size
Top 12 of 233 company matches for environmental consulting companies for oil and gas based in Iran, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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 matchTehran, IranHQ recorded Oct 12, 2026501-1,000451 contacts →

Exact match

“Namvaran Consulting Engineers; Managers founded in 1979 in the era of engineering service industry genesis in Iran, was in fact unfolded from a foreign base - a joint ventured…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2Exact matchTehran, IranHQ recorded Oct 12, 2026201-500194 contacts →

Exact match

“SeaLand Engineering & Well Services is established through multinational investment.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3Exact matchTehran, IranHQ recorded Oct 12, 20261,001-5,000192 contacts →

Exact match

“We are proud to present over a half century of our history, beginning with formation of the Ofogh Consulting Engineers Company in 1961.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4Exact matchTehran, IranHQ recorded Oct 12, 2026201-500119 contacts →

Exact match

“On this basis, NIPEC, Non-ferrous Industries Process Engineering and Construction company, was established with the support of NICICO, National Iranian Copper Industries Company…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5Exact matchTehran, IranHQ recorded Oct 12, 20261,001-5,000112 contacts →

Exact match

“Kish Petroleum Engineering (KPE), founded in as a subsidiary of Oil Industries Engineering and Construction (OIEC) Group, is an engineering and exploration company serving…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6Exact matchTehran, IranHQ recorded Oct 12, 2026201-500109 contacts →

Exact match

“Namavaran Delvar Engineering and Construction (NDEC) was established by a group of veteran PM professionals in oil, gas and petrochemical industries in 2004.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7Exact matchTehran, IranHQ recorded Oct 12, 2026501-1,00090 contacts →

Exact match

“Pars Energy Gostar Drilling and Exploration Company (PEDEX) was established in 1981 as a construction company and a subsidiary of Mostazafan Foundation, and it started its…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8Exact matchTehran, IranHQ recorded Oct 12, 2026501-1,00072 contacts →

Exact match

“Daniel Petro Company has started its activities since 2010 with the aim of conducting study activities and providing technical and engineering services inside and outside of the…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9Exact matchTehran, IranHQ recorded Oct 12, 2026201-50050 contacts →

Exact match

“SHARGAN was established in 1994 to build an indigenous technological base for design, engineering as well as project management and technical services required by Oil, Gas &…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10Exact matchTehran, IranHQ recorded Oct 12, 2026501-1,00040 contacts →

Exact match

“Oil Exploration Operations Company (OEOC) is one of the most reputable private company in the upstream sector of Iranian oil and gas industry.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11Exact matchAhvaz, IranHQ recorded Oct 12, 202611-5013 contacts →

Exact match

“ASAK Consulting Engineering, established in 2018, provides tailored solutions and expertise that bring significant value to national and international governmental and private…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12Exact matchتهران, IranHQ recorded Oct 12, 202611-5011 contacts →

Exact match

“Soufar Fundamental Resources" is the first and only specialized company in the field of water and environmental mining in Iran.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase

Showing 12 of 233 environmental consulting companies for oil and gas based in Iran

See the full list, filter by size, metro and specialty, and access 23 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental consulting companies for oil and gas based in Iran at a glance

As of Oct 12, 2026
0.3%Verified-email coverage
33.9Average contacts per company
51-200Median size (employees)
78.5%Largest-city concentration · Tehran
Oct 12, 2026Page data refreshed

Companies by employee count

1-10
35
11-50
81
51-200
69
201-500
25
501-1,000
14
1,001-5,000
8
10001+
1

Email recency for this list is measured worldwide rather than for Iran, so it is reported there. Company counts and contact totals on this page are exact for Iran, over 233 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 Iran whose business descriptions match “environmental consulting companies for oil and gas” 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 23 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 October 12, 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.

Environmental consulting companies for oil and gas 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 “environmental consulting companies for oil and gas”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental consulting companies for oil and gas are there based in Iran?

RevenueBase identified 233 company matches for environmental consulting companies for oil and gas associated with Iran as of October 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?

Namvaran Consulting Engineers, Managers tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most environmental consulting companies for oil and gas?

Tehran leads with 183 company records, followed by Isfahan (5) and Karaj (4).

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 23 professional contacts with verified work emails tracked across these 233 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 October 12, 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.