Company lists · Data refreshed September 2026

Top 25 Marine environmental engineering companies based in Saudi Arabia

Name: Marine environmental engineering companies based in Saudi Arabia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 91 companies tracked

RevenueBase identified 91 marine environmental engineering companies headquartered in Saudi Arabia as of September 2026 and tracks 3,772 professional contacts across them, including 353 with verified work emails. Dammam is the largest hub.

This list covers marine environmental engineering companies 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 17, 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 17, 2026 86% judged on-target in blind review

91Companies

3,772Contacts tracked

353Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest marine environmental engineering companies based in Saudi Arabia

Ranked by team size

Top 25 of 91 marine environmental engineering companies based in Saudi Arabia, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to marine environmental engineering companies: 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 17, 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 17, 2026
2	Marine Services Company LTD	Partial evidence	Jeddah, Saudi ArabiaHQ checked Sep 17, 2026	501-1,000	183 contacts →
	Partial evidence “Marine Services Co, Ltd.” Source: RevenueBase Database · checked Sep 17, 2026
3	Fouad Al-Saleh & Khaled Al-Dhowalia Environmental & Engineering Consultants Company	Strong evidence	Riyadh, Saudi ArabiaHQ checked Sep 17, 2026	201-500	109 contacts →
	Strong evidence “Fouad Al-Saleh & Khaled Al-Dhowalia Environmental & Engineering Consultants Co.” Source: RevenueBase Database · checked Sep 17, 2026
4	Sealand Maritime Group	Partial evidence	Rastanura, Saudi ArabiaHQ checked Sep 17, 2026	201-500	80 contacts →
	Partial evidence “Sealand Maritime Group with corporate office in Rastanura and offices in other GCC countries provides cutting edge solutions to the Marine industry.” Source: RevenueBase Database · checked Sep 17, 2026
5	Faisal M. Higgi & Associates Co. LTD	Indirect evidence	Yanbu, Saudi ArabiaHQ checked Sep 17, 2026	51-200	78 contacts →
	Indirect evidence “Faisal M.” Source: RevenueBase Database · checked Sep 17, 2026
6	Gulf Power Marine Company	Partial evidence	Al Khobar, Saudi ArabiaHQ checked Sep 17, 2026	51-200	68 contacts →
	Partial evidence “Gulf Power Marine has been continuously growing since its establishment in 1997, providing marine equipment and services in the Kingdom of Saudi Arabia (with headquarters in Al…” Source: RevenueBase Database · checked Sep 17, 2026
7	Calex Group	Partial evidence	Jubail, Saudi ArabiaHQ checked Sep 17, 2026	51-200	56 contacts →
	Partial evidence “Since our humble establishment in Cochin, India in 2008, CALEX has aspired to offer the best solution to the Marine, Offshore and Industrial when it comes to meet high quality…” Source: RevenueBase Database · checked Sep 17, 2026
8	AL Najm AL Thaqib Co. For Marine Services	Indirect evidence	Jubail, Saudi ArabiaHQ checked Sep 17, 2026	51-200	52 contacts →
	Indirect evidence “AL NAJM AL THAQIB Co.” Source: RevenueBase Database · checked Sep 17, 2026
9	Environmental Measurement Co. Emco	Indirect evidence	Jeddah, Saudi ArabiaHQ checked Sep 17, 2026	11-50	46 contacts →
	Indirect evidence “شركة مختصة في الخدمات والاستشارات البيئية” Source: RevenueBase Database · checked Sep 17, 2026
10	Arabian Environmental Science Ltd. Company Arensco	Partial evidence	Khobar, Saudi ArabiaHQ checked Sep 17, 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 17, 2026
11	Sixalliance Offshore Innovation	Partial evidence	Jubail First Industrial, Saudi ArabiaHQ checked Sep 17, 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 17, 2026
12	Murjan Al-Sharq Marine Services	Partial evidence	Khobar, Saudi ArabiaHQ checked Sep 17, 2026	51-200	25 contacts →
	Partial evidence “Providing marine construction and maintenance of ports, breakwaters and bridges including oil spill removal/treatment, Dredging and reclamation; Marine diving Supply and services…” Source: RevenueBase Database · checked Sep 17, 2026
13	Gsces Environmental	Partial evidence	Al Yasmeen, Saudi ArabiaHQ checked Sep 17, 2026	51-200	24 contacts →
	Partial evidence “GSCES Environmental is a part of Dr.” Source: RevenueBase Database · checked Sep 17, 2026
14	Gulf Advanced Control Systems Gacs Arabia	Strong evidence	Ras Tanura, Saudi ArabiaHQ checked Sep 17, 2026	51-200	22 contacts →
	Strong evidence “G.A.C.S Arabia is a Design, Engineering, Environmental Monitoring, Systems Integrator & Testing Services Provider since 2004.” Source: RevenueBase Database · checked Sep 17, 2026
15	Advanced Triad Turbine Services Co. LTD	Partial evidence	Jeddah, Saudi ArabiaHQ checked Sep 17, 2026	51-200	21 contacts →
	Partial evidence “Advanced Triad Turbine Services (ATTS) is part of Asyad Holding Group, a group with diversified interests ranging from Real Estate, Construction, Power, Engineering Services and…” Source: RevenueBase Database · checked Sep 17, 2026
16	Ahenvironmental Consulting Company	Partial evidence	Khobar, Saudi ArabiaHQ checked Sep 17, 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 17, 2026
17	Staterra	Partial evidence	Al Khobar, Saudi ArabiaHQ checked Sep 17, 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 17, 2026
18	Clean Environment Technologies Firm	Partial evidence	Khobar, Saudi ArabiaHQ checked Sep 17, 2026	1-10	18 contacts →
	Partial 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 17, 2026
19	Sameer Al-Marzouki Engineering Consultants	Partial evidence	Jeddah, Saudi ArabiaHQ checked Sep 17, 2026	11-50	17 contacts →
	Partial evidence “We are dedicated to helping our clients establish contamination-controlled environments in their facilities by utilizing the latest and emerging technologies.” Source: RevenueBase Database · checked Sep 17, 2026
20	NAMCO	Indirect evidence	Jeddah, Saudi ArabiaHQ checked Sep 17, 2026	11-50	15 contacts →
	Indirect evidence “NAMCO providing reliable solutions to the onshore and offshore energy industry and government sector.” Source: RevenueBase Database · checked Sep 17, 2026
21	EQI KSA	Partial evidence	Al Ula, Saudi ArabiaHQ checked Sep 17, 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 17, 2026
22	Global Strategic Alliance	Partial evidence	Dammam, Saudi ArabiaHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “GSA Provides marine scientific ballast water testing to confirm it meets the current IMO standards and future Saudi Port requirement.” Source: RevenueBase Database · checked Sep 17, 2026
23	Envocoast	Partial evidence	Al Khobar, Saudi ArabiaHQ checked Sep 17, 2026	11-50	9 contacts →
	Partial evidence “FromSauditotheWorld Envocoast is a Saudi Arabia-based marine protection manufacturer.” Source: RevenueBase Database · checked Sep 17, 2026
24	Special Environmental Projects Company	Partial evidence	Khobar, Saudi ArabiaHQ checked Sep 17, 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 17, 2026
25	Saudi Asma Enviromental Solutions	Strong evidence	Jeddah, Saudi ArabiaHQ checked Sep 17, 2026	201-500	6 contacts →
	Strong evidence “Saudi ASMA Environmental Solutions LLC is a Malaysian company, specializing in environmental fields (Planning, Engineering, Consultancy, Equipment supply, monitoring, solutions…” Source: RevenueBase Database · checked Sep 17, 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: marine environmental engineering companies. 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 marine environmental engineering companies.
Partial evidence: Its own public description names part of marine environmental engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine environmental engineering companies. 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 91 marine environmental engineering companies based in Saudi Arabia

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 353 reachable decision-makers.

Free signup · no credit card

View the full list →

Marine environmental engineering companies based in Saudi Arabia at a glance

As of Sep 17, 2026

9.4%Verified-email coverage

41.5Average contacts per company

11-50Median size (employees)

13.2%Largest-city concentration · Dammam

Sep 17, 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 91 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 marine environmental engineering companies, 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 “marine environmental engineering companies”. 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 marine environmental engineering companies), 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 marine environmental engineering companies, 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, 353 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 17, 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 marine environmental engineering companies, 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 marine environmental engineering companies are there based in Saudi Arabia?

RevenueBase identified 91 marine environmental engineering companies 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 marine environmental engineering companies?

Dammam leads with 12 headquartered companies, followed by Jeddah (12) and Al Khobar (11).

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 353 verified decision-maker contacts tracked across these 91 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 17, 2026.

Ready to reach these companies? Verified emails and direct dials for all 91 marine environmental engineering companies based in Saudi Arabia. Start with a free account, no credit card.

Download this list →

Related lists

Marine environmental engineering companies by geography

Browse the directory

Browse: Companies home · All Saudi Arabia lists · All Marine environmental engineering companies lists · New lists

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.