| اسم الشركة | عنوان | هاتف | البريد الإلكتروني | الفاكس | نوع النشاط | إذن تصريح |
| HMR Environmental Consultants | P.O Box 1295 P.C 111Bousher- Bousher- Muscat | 24618800 | oman@hmrenv.com | 24618811 | Environmental Engineering ConsultingA | 15-Feb-2026 |
| Haskoning International Engineering Consultancy LLC. | P.O Box 1074 P.C 113 Al QURM/ Bousher/ Muscat | 24137838 | Grant.peckham@rhdhv.com | 24139438 | Environmental Engineering Consulting A | 18-Apr-2027 |
| Worley Oman Engineering LLC | P.O Box 795, P.C 133, South Al khuwair,Bousher,Muscat | 24473489 | Infra.env@worley.com | 24483908 | Environmental Engineering Consulting A | 20-Sep-2025 |
| Muscat Engineering Consultancy LLC | P.O Box 716 P. C 130,Ghala Alsaniah ,Bousher,Muscat | 99627514 | mec@mec.co.om | 24215001 | Environmental Engineering Consulting A | 07-Jan-2027 |
| Geo Resources Consultancy LLC | P.O Box 1127 P.C 111 Bousher- Muscat | 24496953 | grcom@omantel.net.om | 24493542 | Environmental Consulting A | 29-Aug-2026 |
| AL Majal Environmental and Technical Servies LLC | P.O Box 1509 P. C 111,Azaiba, Bousher,Muscat | +968 91276969/ +96824902644 | almajalenv@gmail.com | - | Environmental Consulting A | 02-Sep-2025 |
| Dome International for Environmental and Engineering Services SPC | Office No. 538 H, Al Siyabi Group Building. PO Box No. 2578, PC 133, Al Khuwair, Muscat | 93351323 / 24484700 | dome.oman@domeint.com | - | Environmental Consulting A | 05-Aug-2026 |
| Point B Services Engineering Technology SPC | P.O Box 318 P.C 114 Ruwi/ Muttrah/ Muscat.
| 97077798 / 71990572 | info@pointboman.com | - | Environmental Consulting A | 04-Apr-2026 |
| Associated development professional environmental consultants L.L.C | P.O Box 3731 Post Code:111 Al Khawd- AL Seeb / Muscat. | +968 – 79058920 | hasnain@adpconsultant.com / srinivas@adpconsultant.com | - | Environmental ConsultingA | 06-Dec-2027 |
| YAHYA ENGINEERING LLC | P.O Box 1537 P.C 131, Ruwi,Muttrah | 92558876 / 91799170 | info@yahyaengineering.net | - | Environmental Consulting A | 19-May-2027 |
| Al Safa Environmental & Technical Services LLC | P.O Box 3013,P. C 111, (SAJ Building No 253), Way No 5704, Bousher/ Bousher- Muscat" | +968 22052101/99340493/93299054 | info@alsafaenv.com / salim@alsafaenv.com | 24494750 | Environmental Consulting | 18-Nov-2025 |
| Al Falak for Environmental Consultancy | P.O Box 43 P.C 518 AL- Duqm/ Al-Wusta'a or Muscat | 92086800 | alfalak@gmx.com | - | Environmental Consulting A | 05-Sep-2026 |
| Tawazon environmental consultancy | P.O Box 15 P. C 118 Aludhaybah - Bousher/Muscat | 99416742 | tec@tawazonconsultancy.com | - | Environmental Consulting | 19-May-2026 |
| Usus for Geographic consulting LLC | P.O Box 434, P.C 319 Sohar/ North AL Batinah | +968 90467070 | ususgc@hotmail.com | - | Environmental consulting A | 20-May-2026 |
| Mazon Environmental Technical Service LLC | P O BOX 1718 PC 133Knowledge Oasis Muscat KOM / Al Seeb / Muscat Governorate | 24155377/99427390 | admin@mets-oman.com | 24155376 | Environmental Consulting A | 09-Oct-2024 |
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