| اسم الشركة | عنوان | هاتف | البريد الإلكتروني | الفاكس | نوع النشاط | إذن تصريح |
| Muscat Engineering Consultancy LLC | P.O Box 716 P. C 130, Al athaibah | 24215000 | mec@mec.co.om | 24215001 | Environmental Engineering Consulting | 18-Nov-2022 |
| Al Safa Environmental & Technical Services LLC | P.O Box 3013 P. C 111, (SAJ Building No 253), Way No 5704, Bousher/ Bousher- Muscat" | 98081198-93299054 | info@alsafaenv.com / salim@alsafaenv.com | 24494750 | Test and Measurement of Environmental Indicators | 05-May-2022 |
| KEO International Consultants | P.O Box 2871 P. C 112, Ruwi | 24392800 | info@keoic.com | 24488520 | Environmental Consulting | 18-Mar-2021 |
| HMR Environmental Consultants | P.O Box 1295 P.C 111 Ghalah- Bousher- Muscat | 24618800 | oman@hmrenv.com | 24618811 | Environmental Engineering Consulting | 15-Feb-2023 |
| Renardet SA & Partners Consulting Engineering L.L.C | P.O Box 579 P.C 100Muscat | 24483298 | renardet-oman@renardet.net | 24483039 | Environmental Engineering Consulting | 20-Feb-2023 |
| Geo Resources Consultancy LLC | P.O Box 1127 P.C 111 Bousher- Muscat | 24495524 | grcom@omantel.net.com | 24493542 | Environmental Consulting | 29-Aug-2021 |
| Worley Oman Engineering LLC | P.O Box 795, P.C 133 Landmark Building, 3rd & 4th Floor Building 1135, Way 4509, Al Khuwair Muscat, Sultanate of Oman | 24473489 | Infra.env@worley.com" | 24483908 | Environmental Engineering Consulting | 20-Sep-2021 |
| Mazon Environmental Technical Service LLC | P.O Box 1718 P.C 133 | 24155377 / 99427390 | admin@mets-oman.com | 24155376 | Environmental Consulting | 09-Oct-2022 |
| Khatib & Alim and Partners | P.O Box 238 P.C 112 Bousher- Muscat | 24602016 | muscat@kahatibalami.com | 24602098 | Environmental Engineering Consulting | 15-May-2023 |
| Al Ardh Al Teebah Trading Establishment | P.O Box 1509 P. C 211, Dhofar- Salalah | 99494772 / 23210933 | mahaadshammas@gmail.com | - | Environmental Consulting | 25-Apr-2022 |
| Alawael Consulting and Sustainability | P.O Box 1876 P. C 130, Bousher- Muscat. | 24584743 / 99375377 | aalswai@alawaeloverseas.om | 24594714 | Environmental Consulting | 29-May-2020 |
| Amazon for Environment and sustainability | P.O Box 461 P.C 115, Bousher- Muscat. | 96555535 | Alfarsi11@yahoo.com | 24499572 | Environmental Engineering Consulting | 16-May-2022 |
| Trends for Geological & Environmental Consulting EST | P.O Box 2421 P.C 211, Doufar, Salalah | 92510548 | sulayamsaid@gmail.com | - | Environmental Consulting | 09-Dec-2022 |
| Civil Technology Engineering Consultancy | P.O Box 1275 P.C 132, Al Khawd- AL Seeb / Muscat. | 92823999 | Civiltech.ceo@gmail.com | 24538806 | Environmental Consulting | 07-Jun-2022 |
| YAHYA ENGINEERING LLC | P.O Box 1537 P.C 131, Ruwi,Muttrah | 92558876 / 91799170 | info@yahyaengineering.net | - | Environmental Consulting | 16-May-2022 |
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