Company lists · Data refreshed September 2026
Top 25 Hydrogeological consultants based in Saudi Arabia
RevenueBase identified 209 hydrogeological consultants headquartered in Saudi Arabia as of September 2026 and tracks 5,565 professional contacts across them, including 675 with verified work emails. Riyadh is the largest hub.
This list covers hydrogeological consultants 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 21, 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.
The 25 largest hydrogeological consultants based in Saudi Arabia
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 418 contacts → | ||||
Indirect evidence “Ammico is a geotechnical specialist contracting company and specializes in foundation engineering and marine works.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 303 contacts → | ||||
Indirect evidence “Saudi Engineering Group International (SEGI) a multidisciplinary engineering and PMC service provider based in Dammam, Eastern Region with existing support offices in Southern…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 206 contacts → | ||||
Partial evidence “The ILF Group is an international engineering consultancy that helps its clients execute technically demanding industrial and infrastructure projects.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 198 contacts → | ||||
Indirect evidence “Ahmed AlMousa Engineering is a distinguished engineering house of expertise specializing in supervision services, built upon the highest standards of efficiency and quality.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 163 contacts → | ||||
Indirect evidence “OEO is a 100 % Saudi engineering consulting office owned by Dr.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 152 contacts → | ||||
Partial evidence “Engineering and Technical Services company is a Saudi company working in the field of engineering consultancy since 1976 and this extended experience has allowed us to provide…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 149 contacts → | ||||
Indirect evidence “For over 25 years, Saudi Geophysical has been a global leader in subsurface services, delivering quality, cutting-edge technology, and the best manpower.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 121 contacts → | ||||
Indirect evidence “Al Haytham General Contracting has been established in Jeddah in 1990 (Hijri 1410).” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 120 contacts → | ||||
Indirect evidence “Alrabiah Consulting Engineers (ARE) is a multi-disciplinary professional consulting engineering firm based in Saudi Arabia with head office in Dammam and regional offices in…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 109 contacts → | ||||
Partial evidence “Fouad Al-Saleh & Khaled Al-Dhowalia Environmental & Engineering Consultants Co.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 98 contacts → | ||||
Indirect evidence “IWAC is a Saudi based Engineering co.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 89 contacts → | ||||
Partial evidence “A group of engineering companies consolidated in the intention to provide superior level of multi-disciplinary consultancy services that delivers a comprehensive array of…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 85 contacts → | ||||
Partial evidence “The Fichtner Group is one of the leading independent engineering consultancy firms in the world.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 82 contacts → | ||||
Partial evidence “Sabbagh Engineering Consultants & Associates (SECA) is a Saudi multidisciplinary consultancy based in Jeddah, and operating through out the Kingdome vast regions.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 80 contacts → | ||||
Indirect evidence “BECT is a House of Expertise, established in Egypt since 1989, ventured in KSA in 2006 as a limited liability partnership, founded by two partners, Prof.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 72 contacts → | ||||
Indirect evidence “Omar Al Jazzar Consulting Engineers is a civil engineering company based out of Omar Jazzar Consulting Engineers Building, Riyadh, Riyadh, Saudi Arabia.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 67 contacts → | ||||
Indirect evidence “The Golden Compass is an independent international Consulting, Drilling, and Services practise providing focused advice and solutions, and services contracting to the earth…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 63 contacts → | ||||
Indirect evidence “Specialist Structural and Geotechnical Engineering Contractors.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 63 contacts → | ||||
Partial evidence “Gulf Consult was established in KSA – Khobar in the year 1981 as is an independent multidisciplinary consultancy organization to provide range of engineering, testing and…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 60 contacts → | ||||
Indirect evidence “AlSuhaimi Group Holding is a family owned company serving Saudi Arabia and The GCC from our offices located in Dammam, Riyadh, and Jeddah.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 51 contacts → | ||||
Indirect evidence “A subsidiary of Aljoaib Holdings, GTC has a 24-year history of providing geotechnical engineering services to the Arabian Gulf.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 36 contacts → | ||||
Indirect 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 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 28 contacts → | ||||
Indirect evidence “Taiba Consulting Company (TCC) is a leading engineering consulting firm based in Saudi Arabia.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
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: hydrogeological consultants. 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 hydrogeological consultants.
- Partial evidence
- Its own public description names part of hydrogeological consultants, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name hydrogeological consultants. 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 209 hydrogeological consultants based in Saudi Arabia
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Hydrogeological consultants based in Saudi Arabia at a glance
As of Sep 21, 2026Companies by employee count
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 209 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 hydrogeological consultants, 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 “hydrogeological consultants”. 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 hydrogeological consultants), 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 hydrogeological consultants, 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, 675 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 21, 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.
Hydrogeological consultants by metro
- Hydrogeological consultants in Riyadh75
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 hydrogeological consultants, 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 hydrogeological consultants are there based in Saudi Arabia?
RevenueBase identified 209 hydrogeological consultants 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?
Ammico International Contracting Co. LTD, headquartered in Jeddah Makkah, tops this list with the largest team on record.
Which city has the most hydrogeological consultants?
Riyadh leads with 75 headquartered companies, followed by Jeddah (17) and Dammam (14).
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 675 verified decision-maker contacts tracked across these 209 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 21, 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.
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