| | Naziv tvrtke | Mjesto | Certifikacijska kuća | Prva certifikacija | Zadnja certifikacija | Napomena |
| 1 | | | BVC | | | |
| 2 | ABC Interijeri d.o.o. | Zagreb | SGS | 2008 | 2008 | EAC 29/18 |
| 3 | ABC Maziva d.o.o. - Podružnica Zgreb | Zagreb | SIQ | 2009 | 2009 | EAC 29 |
| 4 | AD Libitum d.o.o. | Zagreb | SGS | 2009 | 2009 | EAC 39 |
| 5 | AD Plastik d.d. | Solin | BVC | 2004 | 2007 | EAC 14 |
| 6 | Adria servis transport d.o.o. | Zagreb | CroCert | 2008 | 2008 | EAC 31 |
| 7 | Adriadrvo d.o.o. | Gradec | SGS | 2006 | 2006 | EAC 06 |
| 8 | Advena d.o.o. | Split | SGS | 2011 | 2011 | EAC 28 |
| 9 | Aeks d.o.o. | Ivanić Grad | BVC | 2006 | 2006 | EAC 17 |
| 10 | Agencija za integralni transport d.o.o. | Zagreb | SGS | 2008 | 2008 | EAC 31 |
| 11 | Agencija za komercijalnu djelatnost - AKD | Zagreb | BVC | 2006 | 2009 | EAC 09a |
| 12 | Agencija za zaštitu okoliša | Zagreb | SGS | 2009 | 2009 | EAC 39 |
| 13 | Agmar d.o.o. | Zagreb | DNV | 2008 | 2008 | EAC 13 |
| 14 | Agro Vir d.o.o. | Zagreb | SGS | 2011 | 2011 | EAC 29 |
| 15 | Agroder d.o.o. | Zagreb | CroCert | 2006 | 2006 | EAC 35 |
| 16 | Agrolaguna d.d. | Poreč | BVC | 2011 | 2011 | EAC 03 |
| 17 | Agromeđimurje d.o.o. | Čakovec | QS–Adria norma | 2011 | 2011 | EAC 03 |
| 18 | Alatnica Milek | Zagreb | DNV | 2005 | 2005 | EAC 17 |
| 19 | Al-cor d.o.o. | Trogir | BVC | 2010 | 2010 | EAC 17 |
| 20 | Alfa-2 d.o.o. | Dubrovnik | SGS | 2010 | 2010 | EAC 29 |
| 21 | Alfaplan građenje d.o.o. | Dubrovnik | SGS | 2010 | 2010 | EAC 28 |
| 22 | Alstom Hrvatska d.o.o. | Karlovac | DNV | 2003 | 2005 | EAC 18 |
| 23 | Aluferit građenje d.o.o. | Pitomača | QS–Adria norma | 2008 | 2011 | EAC 17,18 |
| 24 | AMB gradnja d.o.o. | Zagreb | QS–Adria norma | 2011 | 2011 | EAC 28 |
| 25 | Ambijenti d.o.o. | Čakovec | SGS | 2009 | 2009 | EAC 35 |
| 26 | Anamil d.o.o. | Zagreb | ICR Adriatica | 2010 | 2010 | EAC 29 |
| 27 | Ante Mijić Quercus d.o.o. | Novska | CroCert | 2008 | 2008 | EAC 06 |
| 28 | Aqua-promet d.o.o. | Zagreb | DNV | 2010 | 2010 | EAC 29 |
| 29 | Aquatehnika d.o.o. | Varaždin | TÜV Croatia | 2010 | 2010 | EAC 28 |
| 30 | Aquaterm d.o.o. | Karlovac | DNV | 2006 | 2006 | EAC 28 |
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