| Company name | Reg. code |
|---|---|
| ALPA OÜ | 17311017 |
| ALPA77 OÜ kustutatud | 12322157 |
| ALPA KIDS OÜ (former name Ablas Alpa OÜ) | 14547512 |
| ALPAR OÜ | 12781066 |
| ALPAN OÜ | 12772831 |
| ALPAX EHITUS OÜ kustutatud | 12254510 |
| ALPAN PROJEKTID OÜ | 17397705 |
| ALPS2ALPS OÜ | 16448688 |
| ALPPA OÜ kustutatud | 16151735 |
| ALPRA OÜ | 14709593 |
| ALPHA OÜ | 10904027 |
| ALP OÜ | 16084134 |
| ALPHA BONDED OÜ | 12129118 |
| ALPHA LEARNING OÜ | 14853195 |
| ALPHA SALES OÜ | 14258274 |
| ALPHA WAVE OÜ | 16922776 |
| URSINHO ALPHA OÜ | 17442162 |
| ALPHA IT OÜ | 16127168 |
| ALPHA PROFIT OÜ | 12769958 |
| ALPHA PIONEERING OÜ (former name AI Time Journal OÜ) | 14588729 |
| ALPHA GROWTH OÜ | 16621230 |
| ALPO INSTALLATION OÜ | 14740574 |
| RESPONSIBLE ALPHA OÜ kustutatud | 17123563 |
| ALPHA VENTURES OÜ | 16300299 |
| ALPHA MOTORS OÜ | 14903674 |
| ALPHA 3D OÜ (former name Alpha AR OÜ) | 14586044 |
| ALPHA UNION OÜ | 14682641 |
| ALPHA BELLE OÜ | 14916642 |
| ALPHA WIZARD OÜ | 17226145 |
| ALPHA BRAVO OÜ (former name OÜ Albin Capital) | 11506375 |
| AEGIR ALPHA OÜ | 17309301 |
| ALPHA COMPANY OÜ (former name Sharpfit OÜ) | 14812204 |
| ALPHA QUANTUM OÜ kustutatud | 16023569 |
| ALPHA3 CONSULTING OÜ | 16785109 |
| ALPHA BEAN OÜ | 12181716 |
| ALPHA GAIN OÜ | 16745050 |
| ALPHA MULTITRADE OÜ | 11726361 |
| ALPE TRANSPORT OÜ | 12331570 |
| ALPHA DIGITAL OÜ | 14512382 |
| ALPHA WOOD OÜ kustutatud | 14032376 |
| ALPHA HOSTEL OÜ kustutatud | 14785915 |
| ALPHA CMA OÜ | 14813988 |
| ALPI EESTI OÜ | 11242290 |
| ALPE MANAGEMENT OÜ | 12915437 |
| ALPHA SOLUTIONS OÜ (former name Alpha Soultions OÜ) | 14787587 |
| ALPE GROUP OÜ (former name A.S-Forest OÜ) | 14626648 |
| ALPHA AUTOMATICS OÜ | 12137566 |
| SAMANCLA ALPE OÜ | 16930758 |
| ALPHA AUDIT OÜ | 10612365 |
| ALPHA ENGINEERING OÜ kustutatud | 12308074 |