| Dados Beauty | Services |
| Daien | Conglomerates |
| Dallah Advertising Agency | Services |
| Dallah International Catering & Trading | Retail |
| Damaan Islamic Insurance Company "Beema" (Q.S.C.C) | Financial Services |
| Daman Health Insurance - Qatar LLC | Financial Services |
| Dandy Company Limited | Food and Beverages |
| Danielle Bejjani Salon | Services |
| Dar Al Sharq Printing, Publishing & Distribution LLC | Services |
| Dar Al Watan Printing, Publishing and Distribution Company WLL | Media |
| DAR Investment & Development L.L.C | Real Estate |
| Dara Engineering Consultants | Construction |
| Darwish & Company | Industrial Manufacturing |
| Darwish Elevators Company W.L.L. | Industrial Manufacturing |
| Darwish Holding | Consumer Goods |
| Darwish Trading Company WLL | Consumer Goods |
| Darwish Travel Company WLL | Leisure and Tourism |
| Data Capture Systems | Services |
| Deco-tech Decorations & Building Materials | Construction |
| Decoration World W.L.L. | Services |
| Decorator | Construction |
| DEIMAJ GROUP W.L.L | Conglomerates |
| Deliopolis WLL | Food and Beverages |
| Delta Group International W.L.L | Information Technology |
| Delta Public Relations | Services |