Company lists · Data refreshed September 2026

Top 25 Offshore environmental consulting based in Saudi Arabia

Name: Offshore environmental consulting based in Saudi Arabia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 102 companies tracked

RevenueBase identified 102 offshore environmental consulting headquartered in Saudi Arabia as of September 2026 and tracks 4,772 professional contacts across them, including 590 with verified work emails. Riyadh is the largest hub.

This list covers offshore environmental consulting headquartered in Saudi Arabia, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

102Companies

4,772Contacts tracked

590Verified emails

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The 25 largest offshore environmental consulting based in Saudi Arabia

Ranked by team size

Top 25 of 102 offshore environmental consulting based in Saudi Arabia, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to offshore environmental consulting: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Zamil Offshore Services Company	Partial evidence	Al-khobar, Saudi ArabiaHQ checked Sep 20, 2026	1,001-5,000	2,312 contacts →
	Partial evidence “Zamil Offshore Services Company has been offering diversified offshore and marine support services to the oil and gas industry since 1977.” Source: RevenueBase Database · checked Sep 20, 2026
2	Jana Marine Service Company LLC	Partial evidence	Khobar, Saudi ArabiaHQ checked Sep 20, 2026	501-1,000	916 contacts →
	Partial evidence “Provides first-class marine offshore Services to the Oil & Gas sector in the Arabian Gulf region and beyond.” Source: RevenueBase Database · checked Sep 20, 2026
3	Fugro Suhaimi Company LTD	Indirect evidence	Dammam, Saudi ArabiaHQ checked Sep 20, 2026	501-1,000	359 contacts →
	Indirect evidence “We are the world’s leading Geo-data specialist, collecting and analysing comprehensive information about the Earth and the structures built upon it.” Source: RevenueBase Database · checked Sep 20, 2026
4	Adeco Group KSA	Partial evidence	Riyadh, Saudi ArabiaHQ checked Sep 20, 2026	501-1,000	284 contacts →
	Partial evidence “The Company of Dr Ali Saleh Alduhaiman for Environmental Consultation was established in 2007 as an individual corporation based in Riyadh, Saudi Arabia.” Source: RevenueBase Database · checked Sep 20, 2026
5	Fouad Al-Saleh & Khaled Al-Dhowalia Environmental & Engineering Consultants Company	Partial evidence	Riyadh, Saudi ArabiaHQ checked Sep 20, 2026	201-500	109 contacts →
	Partial evidence “Fouad Al-Saleh & Khaled Al-Dhowalia Environmental & Engineering Consultants Co.” Source: RevenueBase Database · checked Sep 20, 2026
6	Technical Development Solutions	Indirect evidence	Riyadh, Saudi ArabiaHQ checked Sep 20, 2026	501-1,000	58 contacts →
	Indirect evidence “We are one of the companies within Al Mousa Group, a Saudi Arabian conglomerate with over 50 years of experience in the Saudi market.” Source: RevenueBase Database · checked Sep 20, 2026
7	Environmental Measurement Co. Emco	Indirect evidence	Jeddah, Saudi ArabiaHQ checked Sep 20, 2026	11-50	46 contacts →
	Indirect evidence “شركة مختصة في الخدمات والاستشارات البيئية” Source: RevenueBase Database · checked Sep 20, 2026
8	Environmental Support Consulting Office	Strong evidence	Jeddah, Saudi ArabiaHQ checked Sep 20, 2026	51-200	36 contacts →
	Strong evidence “Environmental Support Consulting Office (ESC) is a 100% Saudi-owned environmental consulting firm, established in 2015 and licensed by the Ministry of Commerce and Industry…” Source: RevenueBase Database · checked Sep 20, 2026
9	Arabian Environmental Science Ltd. Company Arensco	Partial evidence	Khobar, Saudi ArabiaHQ checked Sep 20, 2026	51-200	30 contacts →
	Partial evidence “Arensco is a Saudi Arabian based company providing quality environmental services and consultancy to individuals, companies and Government Ministries throughout the Kingdom.” Source: RevenueBase Database · checked Sep 20, 2026
10	Sixalliance Offshore Innovation	Partial evidence	Jubail First Industrial, Saudi ArabiaHQ checked Sep 20, 2026	51-200	26 contacts →
	Partial evidence “SixAlliance consist of a team of individuals and strategic partners that have a vast experience in the Marine and Offshore Industry from the various disciplines that are integral…” Source: RevenueBase Database · checked Sep 20, 2026
11	Salasel Offshore Marine Services	Partial evidence	Khobar, Saudi ArabiaHQ checked Sep 20, 2026	51-200	25 contacts →
	Partial evidence “Salasel Offshore Marine Services, established in 2015 in the Kingdom of Saudi Arabia, is a trusted provider of specialized offshore, marine, and subsea solutions across the Middle…” Source: RevenueBase Database · checked Sep 20, 2026
12	Gsces Environmental	Partial evidence	Al Yasmeen, Saudi ArabiaHQ checked Sep 20, 2026	51-200	24 contacts →
	Partial evidence “GSCES Environmental is a part of Dr.” Source: RevenueBase Database · checked Sep 20, 2026
13	شركة مزيج للإستشارات المهنية Mpcc	Indirect evidence	Al Nakhil District, Saudi ArabiaHQ checked Sep 20, 2026	11-50	22 contacts →
	Indirect evidence “شركة مزيج للاستشارات المهنية.” Source: RevenueBase Database · checked Sep 20, 2026
14	Marine Services Co., LTD	Indirect evidence	Jeddah, Saudi ArabiaHQ checked Sep 20, 2026	501-1,000	22 contacts →
	Indirect evidence “Established in 1975 as part of ‘Al-Zakir Bokhari Group’, the Company has grown with its multi-purpose ability to offer specialized consultancy, management & engineering solutions…” Source: RevenueBase Database · checked Sep 20, 2026
15	Ahenvironmental Consulting Company	Partial evidence	Khobar, Saudi ArabiaHQ checked Sep 20, 2026	11-50	20 contacts →
	Partial evidence “AH Environmental Services firm based in Khobar A member of Al Habri Group of companies Consists of a dedicated team of professionals with advanced degrees in environmental…” Source: RevenueBase Database · checked Sep 20, 2026
16	Staterra	Partial evidence	Al Khobar, Saudi ArabiaHQ checked Sep 20, 2026	11-50	19 contacts →
	Partial evidence “With STATERRA you get a team of diverse and specialised experts to help you go beyond compliance and achieve environmental excellence.” Source: RevenueBase Database · checked Sep 20, 2026
17	Green Fields Environmental Consultancy	Partial evidence	Al Khobar, Saudi ArabiaHQ checked Sep 20, 2026	11-50	19 contacts →
	Partial evidence “We are an approved specialty environmental consultancy planning firm combining local knowledge experience with international experts.” Source: RevenueBase Database · checked Sep 20, 2026
18	Clean Environment Technologies Firm	Strong evidence	Khobar, Saudi ArabiaHQ checked Sep 20, 2026	1-10	18 contacts →
	Strong evidence “Clean Environment Technologies (CET) is a reputed environmental consulting company established in 2005 by Al-Othman Holding Company, employing teams of experts with supreme levels…” Source: RevenueBase Database · checked Sep 20, 2026
19	NAMCO	Partial evidence	Jeddah, Saudi ArabiaHQ checked Sep 20, 2026	11-50	15 contacts →
	Partial evidence “NAMCO providing reliable solutions to the onshore and offshore energy industry and government sector.” Source: RevenueBase Database · checked Sep 20, 2026
20	Mayzan Lakhdar For Environmental Consulting Company	Strong evidence	Dammam, Saudi ArabiaHQ checked Sep 20, 2026	11-50	13 contacts →
	Strong evidence “Mayzan Lakhdar Environmental Consulting Company Certified by The National Center for Environmental Compliance as Class (A) In the Field of an Environmental Consultancy.” Source: RevenueBase Database · checked Sep 20, 2026
21	Mostadam مستدام للأستشارات البيئية	Partial evidence	Dhahran, Saudi ArabiaHQ checked Sep 20, 2026	51-200	12 contacts →
	Partial evidence “MOSTADAM is a leading Saudi environmental consultancy delivering strategic environmental solutions for giga-projects, industrial sectors, and sustainable development initiatives…” Source: RevenueBase Database · checked Sep 20, 2026
22	EQI KSA	Partial evidence	Al Ula, Saudi ArabiaHQ checked Sep 20, 2026	51-200	11 contacts →
	Partial evidence “Our team of environmental engineers, management specialists, ecologists and architects deliver a wide range of environmental management and design services.” Source: RevenueBase Database · checked Sep 20, 2026
23	إمتثال للاستشارات البيئية Emtithal Environmental Consulting	Indirect evidence	الرياض, Saudi ArabiaHQ checked Sep 20, 2026	51-200	10 contacts →
	Indirect evidence “إمتثال للاستشارات البيئية هي شركة سعودية تأسست على يد خبراء معتمدين في التأهيل البيئي وتقييم الأثر البيئي و التدقيق و التأهيل للاعتمادات الدولية من منظمة الايزو في شتى المجالات…” Source: RevenueBase Database · checked Sep 20, 2026
24	Special Environmental Projects Company	Partial evidence	Khobar, Saudi ArabiaHQ checked Sep 20, 2026	11-50	8 contacts →
	Partial evidence “Special Environmental Projects (SEP) is a Saudi Arabian- based, privately owned environmental firm established in 2006, in Al-Khobar, Saudi Arabia.” Source: RevenueBase Database · checked Sep 20, 2026
25	Alsuhaimi Environmental Consultancy شركة السحيمي للاستشارات البيئية	Partial evidence	Dammam, Saudi ArabiaHQ checked Sep 20, 2026	11-50	8 contacts →
	Partial evidence “AlSuhaimi Environmental Consultancy is formed through a joint venture of two established groups – with deep expertise in this space, and also a proven track record of contributing…” Source: RevenueBase Database · checked Sep 20, 2026

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: offshore environmental consulting. 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 offshore environmental consulting.
Partial evidence: Its own public description names part of offshore environmental consulting, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name offshore environmental consulting. 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 102 offshore environmental consulting based in Saudi Arabia

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Offshore environmental consulting based in Saudi Arabia at a glance

As of Sep 20, 2026

12.4%Verified-email coverage

46.8Average contacts per company

11-50Median size (employees)

17.6%Largest-city concentration · Riyadh

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Saudi Arabia, so it is reported there. Company counts and contact totals on this page are exact for Saudi Arabia, over 102 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 offshore environmental consulting, 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 Saudi Arabia whose own description of what they do matches “offshore environmental consulting”. 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 offshore environmental consulting), 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 offshore environmental consulting, and records with no verified work email. Companies headquartered outside Saudi Arabia 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, 590 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.

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 offshore environmental consulting, 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 offshore environmental consulting are there based in Saudi Arabia?

RevenueBase identified 102 offshore environmental consulting headquartered in Saudi Arabia 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?

Zamil Offshore Services Company, headquartered in Al-Khobar, tops this list with the largest team on record.

Which city has the most offshore environmental consulting?

Riyadh leads with 18 headquartered companies, followed by Dammam (14) and Al Khobar (9).

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 590 verified decision-maker contacts tracked across these 102 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.