| 661 | Aster studio | http://www.aster-studio.hr |
| 662 | Asterion d.o.o. | http://www.asterion-violette.hr |
| 663 | Aster-MF d.o.o. | http://www.aster-mf.hr |
| 664 | AS-TIM d.o.o. | http://www.astim.hr |
| 665 | Asting d.o.o. | http://www.asting.hr |
| 666 | Astra Croatica | http://www.astracroatica.com |
| 667 | Astra International d.d. | http://www.astra.hr |
| 668 | Astrea-M d.o.o. | http://www.astrea.hr |
| 669 | Astro - Višnjan | http://www.astro.hr |
| 670 | AstroSkop | http://www.astroskop.net |
| 671 | Astrum d.o.o. | http://www.astrum.hr |
| 672 | AT Kvarner d.o.o. | http://www.at-kvarner.hr |
| 673 | Atelier Alisa d.o.o. | http://www.atelier-alisa.hr |
| 674 | Atelier Marković | http://www.atelier-markovic.hr |
| 675 | Atelier Višnja i Nives | http://www.visnja-nives.hr |
| 676 | Atelier X | http://www.aax.hr |
| 677 | Atelje-Arhitekt d.o.o. | http://www.atelje-arhitekt.hr |
| 678 | Atex d.o.o. | http://www.atex.hr |
| 679 | ATI-MONT d.o.o. | http://www.ati-mont.hr |
| 680 | Atlantic grupa | http://www.atlantic.hr |