| Company name | Reg. code |
|---|---|
| HALLA OÜ | 12240614 |
| HALLA ATELJEE OÜ | 16443685 |
| HALLA FURNITURE OÜ | 14282083 |
| HALLA CONSULTING OÜ | 16148928 |
| HALLAR TEENUSED OÜ kustutatud (former name OÜ Taonga Investments) | 12948827 |
| RAJUD JA HALLAD OÜ | 12378962 |
| TIIT HALLAS CONSULTING OÜ | 12638570 |
| HALLQ OÜ | 11486000 |
| HALL OÜ | 11834145 |
| HALLS AVATUS OÜ kustutatud | 12634945 |
| HALLI-TALU OÜ | 17453562 |
| HALPA TUKKU OÜ kustutatud | 12603726 |
| HALLS BUILDING OÜ kustutatud | 12566801 |
| HALDA GRUPP OÜ | 14656514 |
| HALAL FOOD OÜ | 16993351 |
| HALAL HARVEST OÜ | 17043137 |
| HALAL HOMEMADE OÜ kustutatud | 16189784 |
| TECHNO HALLE OÜ | 14117272 |
| HALLO COSMOS OÜ (former name Tenementum OÜ) | 16004201 |
| HALLI KINNISVARA OÜ kustutatud | 10483318 |
| FIN HALLI OÜ | 12470248 |
| HALCA GROUP OÜ | 14543603 |
| HALL RUUM OÜ | 17108718 |
| FINEST-HALL OÜ kustutatud | 12738260 |
| HALL TRADE OÜ | 16414146 |
| NII HALL OÜ kustutatud | 14831816 |
| VOLTA HALL OÜ | 17029574 |
| TRADE HALL OÜ | 12510870 |
| HALL RUUT OÜ | 16400486 |
| HK HALL OÜ | 10650897 |
| HALL MAJA OÜ | 14549965 |
| HALL DISAIN OÜ | 12170842 |
| HALL PINK OÜ | 14473966 |
| HALL AJU OÜ | 16874853 |
| HALA DIGITAL OÜ | 14276473 |
| HALL MEX OÜ kustutatud | 12453221 |
| CB-HALL OÜ kustutatud | 10113248 |
| HALL MASS OÜ | 10717934 |
| BUSINESS HALL OÜ kustutatud | 12115429 |
| HALL LINN OÜ | 12102059 |
| TUME HALL OÜ | 11547977 |
| CITY HALL OÜ (former name Carte Blanche OÜ) | 12887333 |
| HALL LAENUD OÜ | 11420596 |
| HALL KARDINAL OÜ kustutatud | 12582734 |
| HALL LIND OÜ | 17174336 |
| KAARO HALL OÜ | 10252783 |
| HALL HUNT OÜ kustutatud | 14345205 |
| RIOMAX HALL OÜ (former name OÜ Riomax) | 11310880 |
| HANSA HALL OÜ | 14219386 |
| HALL AUTO OÜ | 10065437 |