| Detail | ZO ČSOP ONYX | 75103397 | Another legal entity | CZ064 | Detail |
| Detail | ZO ČSOP SLOVÁCKÁ KRAJINA Hradčovice | 46254668 | | | Detail |
| Detail | ZO ČSOP Vlašim | 18595677 | Another legal entity | CZ020 | Detail |
| Detail | ZO ČSOP 16/01 Třeboň | 67171702 | | | Detail |
| Detail | ZODIAC EQUIPMENT spol. s r.o. | 25463152 | | | Detail |
| Detail | Zogal Union s.r.o. | 27860388 | | | Detail |
| Detail | ZOGENA s.r.o. | 27460444 | | | Detail |
| Detail | ZOLVEi AB | | | | Detail |
| Detail | ZOO a zámek Zlín - Lešná, příspěvková organizace | 00090026 | Territorial self-governing unit or its contributory organization | CZ072 | Detail |
| Detail | Zoo Brno a stanice zájmových činností, příspěvková organizace | 00101451 | Territorial self-governing unit or its contributory organization | CZ064 | Detail |
| Detail | Zoologická zahrada Tábor, a.s. | 04074025 | Another legal entity | CZ010 | Detail |
| Detail | ZOT CZ, s.r.o. | 49971654 | Another legal entity | CZ064 | Detail |
| Detail | Zotavovna Vězeňské služby České republiky Pracov | 65997999 | State contributory organization | CZ031 | Detail |
| Detail | Zotavovna Vězeňské služby České republiky, PRAHA | 65997964 | State contributory organization | | Detail |
| Detail | Zotavovna Vězeňské služby České republiky Přední Labská | 65997981 | State contributory organization | | Detail |
| Detail | Zoubek Meters s.r.o. | 19955898 | | | Detail |
| Detail | ZP BAYER s.r.o. | 19142684 | | | Detail |
| Detail | ZPA Smart Energy a.s. | 27445976 | | | Detail |
| Detail | ZPI, spol. s r.o. | 46963774 | | | Detail |
| Detail | ZPM Zíma, s.r.o. | 05708273 | | | Detail |
| Detail | Z-projekt s.r.o. | 25023691 | | | Detail |
| Detail | ZPS - SLÉVÁRNA, a.s. | 47908319 | Another entity | CZ072 | Detail |
| Detail | ZPUE S.A. | | | | Detail |
| Detail | ZRIA, a.s. | 63080303 | Another legal entity | CZ072 | Detail |
| Detail | ZŠ Karla Vokáče | 47694815 | Territorial self-governing unit or its contributory organization | CZ032 | Detail |
| Detail | ZŠ Praha 7, Strossmayerovo nám. 4, P7 | 61389838 | Territorial self-governing unit or its contributory organization | CZ010 | Detail |
| Detail | ZULIP s.r.o. | 27696537 | Another legal entity | CZ072 | Detail |
| Detail | ZUNI Care s.r.o. | 23139960 | | | Detail |
| Detail | Zuzana Smékal | 03769208 | | | Detail |
| Detail | ZVÁNOVEC a.s. | 26026279 | | | Detail |
| Detail | ZVU Servis a.s. | 25267817 | | | Detail |
| Detail | ZVVZ ENGINEERING, a.s. | 25696882 | | | Detail |
| Detail | Zymestic Solutions, a.s. | 08071128 | Another legal entity | CZ010 | Detail |
| Detail | ŽakEl, s.r.o. | 01982591 | | | Detail |
| Detail | Žaneta Zahrádková | 05512832 | | | Detail |
| Detail | ŽĎAS, a.s. | 46347160 | Another entity | CZ063 | Detail |
| Detail | Železárny Štěpánov, spol. s r.o. | 46992651 | Another legal entity | CZ064 | Detail |
| Detail | Železářství Fiala s.r.o. | 25578693 | | | Detail |
| Detail | Železářství KUTIL, s.r.o. | 25950070 | | | Detail |
| Detail | Železářství Říha, s.r.o. | 14200538 | | | Detail |
| Detail | Železniční dodavatelská s.r.o. | 27181081 | | | Detail |
| Detail | Železniční společnost Tanvald o.p.s. | 25474481 | Another legal entity | CZ051 | Detail |
| Detail | Že-Stav, s.r.o. | 27697347 | | | Detail |
| Detail | Židovské muzeum v Praze | 60459263 | Another entity | CZ010 | Detail |
| Detail | Žijeme krajinou, z.s. | 10981748 | | | Detail |
| Detail | Žilková Zuzana, MgA. | 10679588 | | | Detail |
| Detail | Živá voda, z. s. | 26996391 | Another legal entity | CZ052 | Detail |
| Detail | Živé nemovitosti, spol. s r.o. | 08629030 | | | Detail |
| Detail | ŽLTC Brno, z.s. | 13692534 | Another legal entity | CZ064 | Detail |
| Detail | Žoček Jiří, Ing. | 14908930 | | | Detail |
