| kebab king Restaurant | Food and Beverages |
| Keller Qatar WLL | Construction |
| KEMCO Electrical & Mechanical Co | Construction |
| Kettaneh Construction Qatar W.L.L. | Construction |
| Key Technical Services W.L.L | Transport |
| Khalid & Hamad Ready Mix Concrete Co. WLL | Industrial Manufacturing |
| Khalid Al Attiya Legal Consultant & Attorney | Services |
| Khalid Bin Ahmed Al-Suwadi Trading & Contracting and Industrial | Construction |
| Khalid Cement Industries Complex | Industrial Manufacturing |
| Khalid Manufacturing Company | Industrial Manufacturing |
| Khalid Scientific Company W.L.L | Health Care |
| Khalifa Steel Industries W.L.L. | Industrial Manufacturing |
| Khatib & Alami Consolidated Engineering Company - Qatar | Construction |
| Khbraat Trading and Contracting | Construction |
| Khouzan Holding WLL | Financial Services |
| King Koil Qatar | Consumer Goods |
| King Of Curtains | Consumer Goods |
| Kingspan Trading & Contracting | Construction |
| KKK & Z International | Services |
| KKT Orthopedic Spine Center | Health Care |
| Kompass Int'l Trading Co WLL Qatar | Conglomerates |
| Kompass International Trading Co WLL | Conglomerates |
| Koru Trading & Contracting | Industrial Manufacturing |
| KPMG Qatar | Financial Services |
| Krom Media | Information Technology |
