| Basic Infrastructure Contracting & Trading Company | Construction |
| Bazlamit Furniture and Interior Design Company | Services |
| BBR Design | Construction |
| BD Consult | Services |
| Beauty factory | Services |
| BECON TRADING & CONTRACTING.W.L.L | Construction |
| Bee Global | Services |
| Behzad Group | Industrial Manufacturing |
| Benchmark Cleaning and Pest Control Services | Services |
| BENSHI TRADING & CONTG CO WLL | Services |
| Best Contractors | Construction |
| Bethel Professional Services | Services |
| Better Graph | Information Technology |
| Between the Two Bridges Co. WLL | Services |
| Beyond Lighting WLL | Industrial Manufacturing |
| Biewu International Trading | Industrial Manufacturing |
| Bigtree Designs | Services |
| Bin Arbaid Trading & Contracting Company WLL | Industrial Manufacturing |
| Bin Arbaid Transportation & Equipment W.L.L. | Services |
| Bin Darwish Group | Services |
| Bin Omran Trading and Contracting Company | Construction |
| Bin Omran Trading and Contracting Company | Construction |
| Bin Sraiya Readymix | Industrial Manufacturing |
| Bios Computer | Consumer Goods |
| Bitumode Qatar Waterproofing Factory | Industrial Manufacturing |
