| Detail | Water & Heat Systems, s.r.o. | 06428207 | | | Detail |
| Detail | WATER POWER SERVICE s.r.o. | 24811611 | Jiná osoba | CZ064 | Detail |
| Detail | WATERS Gesellschaft m.b.H., organizační složka | 60459441 | | | Detail |
| Detail | Wattcom s.r.o. | 26694425 | | | Detail |
| Detail | WATT-GURU s.r.o. | 09781781 | | | Detail |
| Detail | Wattstor s.r.o. | 05533295 | Jiná právnická osoba | CZ010 | Detail |
| Detail | Wave tracks s.r.o. | 17945186 | | | Detail |
| Detail | W a Weinzettl, s.r.o. | 26031116 | Jiná osoba | CZ031 | Detail |
| Detail | WAY UP s.r.o. | 28108701 | | | Detail |
| Detail | WDF s.r.o. | 24836974 | | | Detail |
| Detail | WD LUX, s.r.o. | 64945031 | | | Detail |
| Detail | WDS s.r.o. | 60707526 | | | Detail |
| Detail | Web4U s.r.o. | 17311501 | | | Detail |
| Detail | Weber Architects | | | | Detail |
| Detail | webProgress, s.r.o. | 26282143 | | | Detail |
| Detail | Webra System s.r.o. | 24027910 | | | Detail |
| Detail | WECKO sanitární technika s.r.o. | 03818811 | | | Detail |
| Detail | WeDo Services s.r.o. | 09212043 | | | Detail |
| Detail | Weinhold Legal, s.r.o. advokátní kancelář | 25628470 | | | Detail |
| Detail | WEKUS spol. s r.o. | 25013831 | Jiná osoba | CZ042 | Detail |
| Detail | WELAN Solution s.r.o. | 07813228 | | | Detail |
| Detail | Weldis RK, s.r.o. | 25277235 | | | Detail |
| Detail | WELLCO Brno s.r.o. | 25337009 | | | Detail |
| Detail | WELLEN a.s. | 26751666 | | | Detail |
| Detail | WELTOR GROUP s.r.o. | 23785951 | | | Detail |
| Detail | Wertu studio, s.r.o. | 04350766 | | | Detail |
| Detail | WESLIK s.r.o. | 21971951 | | | Detail |
| Detail | WESTech CZ s.r.o. | 02396718 | | | Detail |
| Detail | Westinghouse Electric Company LLC | | | | Detail |
| Detail | Westinghouse Electric Czech Republic s.r.o. | 44846011 | | | Detail |
| Detail | W.H.A. system, spol. s r. o. | 61945251 | | | Detail |
| Detail | WH Develop s.r.o. | 28116992 | | | Detail |
| Detail | White & Case, s.r.o., advokátní kancelář | 07744536 | | | Detail |
| Detail | WhiteHat Security s.r.o. | 23907002 | | | Detail |
| Detail | W H P TECHNIK s.r.o. | 60717971 | | | Detail |
| Detail | WIA spol. s r.o. | 26703297 | | | Detail |
| Detail | Wichterlovo gymnázium, Ostrava-Poruba, příspěvková organizace | 00842702 | Územní samosprávný celek nebo jeho příspěvková organizace | CZ080 | Detail |
| Detail | WIFCOM a.s. | 24192830 | Jiná osoba | CZ | Detail |
| Detail | Windhunter Service Sp. z o.o. | | | | Detail |
| Detail | WINGL s.r.o. | 21420840 | | | Detail |
| Detail | Winning PS - stavební firma s.r.o. | 49436589 | | | Detail |
| Detail | WINSITE a.s. | 27409058 | | | Detail |
| Detail | WIP Reklama spol. s r.o. | 00511099 | | | Detail |
| Detail | WIRINE ELECTRIC s.r.o. | 09883908 | | | Detail |
| Detail | WN service s.r.o. | 02687631 | | | Detail |
| Detail | Wohnstav s.r.o. | 22634321 | | | Detail |
| Detail | Wolf Verpackungsmaschinen GmbH | | | | Detail |
| Detail | WOLLOW a. s. | 15030032 | Jiná osoba | CZ | Detail |
| Detail | WOOD4YOU s.r.o. | 24187798 | | | Detail |
| Detail | WOODjoix s.r.o. | 23002140 | | | Detail |
| Detail | WOODLIKE s.r.o. | 09440381 | | | Detail |
| Detail | WOOD&STONE s.r.o. | 25862740 | | | Detail |
| Detail | Woodwaste s.r.o. | 08773815 | Jiná osoba | CZ032 | Detail |
| Detail | wopee labs s.r.o. | 17997224 | Jiná právnická osoba | CZ | Detail |
| Detail | Woring s.r.o. | 29159342 | | | Detail |
| Detail | WORLD INVEST - Stavby a doprava s.r.o. | 05630584 | | | Detail |
| Detail | "WORLD INVEST" v.o.s. | 14868938 | | | Detail |
| Detail | Worley Czech Republic s.r.o. | 28451911 | | | Detail |
| Detail | Wotan Forest, a.s. | 26060701 | Jiná právnická osoba | CZ | Detail |
| Detail | WrapStyle s.r.o. | 29304849 | Česká republika | CZ | Detail |
| Detail | WRDATACENTRUM s.r.o. | 07048831 | | | Detail |
| Detail | WTE PowerBolt s.r.o. | 28202759 | Jiná právnická osoba | CZ | Detail |
| Detail | WUKA - GROUP s.r.o. | 27561071 | | | Detail |
| Detail | Würth, spol. s r.o. | 48036021 | | | Detail |
| Detail | XANADU a.s. | 14498138 | | | Detail |
| Detail | X-ARMOR s.r.o. | 04068076 | | | Detail |
| Detail | XART s.r.o. | 29261864 | | | Detail |
| Detail | X Consulting Co. s.r.o. | 06579621 | | | Detail |
| Detail | XEROX CZECH REPUBLIC s.r.o. | 48109193 | | | Detail |
| Detail | Xervon GmbH, org.složka | 28456394 | | | Detail |
| Detail | XEVOS Solutions s.r.o. | 27831345 | Česká republika | CZ080 | Detail |
| Detail | X FUTURE Group s.r.o. | 25113437 | | | Detail |
| Detail | Xolution s.r.o. | 23038217 | | | Detail |
| Detail | XT-Card a.s. | 27408256 | | | Detail |
| Detail | XTOPIX architekti s.r.o. | 03780961 | | | Detail |
| Detail | Yacht klub Jestřábí, z.s. | 03569039 | Jiná právnická osoba | CZ031 | Detail |
| Detail | YANNICK - Plast s.r.o. | 27777294 | Jiná právnická osoba | CZ | Detail |
| Detail | Yaroslav Duminskyi | 17965187 | | | Detail |
| Detail | Yashica Events a.s. | 07306041 | Jiná právnická osoba | CZ063 | Detail |
| Detail | YASHICA s.r.o. | 46980121 | | | Detail |
| Detail | YELLOW SHAPES s.r.o. | 05322138 | | | Detail |
| Detail | YLK spol. s r.o. | 26145634 | | | Detail |
| Detail | Ynot technologies s.r.o. | 28390156 | | | Detail |
| Detail | Yord s.r.o. | 07787537 | | | Detail |
| Detail | YoungLink s.r.o. | 19371837 | Jiná právnická osoba | CZ031 | Detail |
| Detail | Your IT s.r.o. | 24180513 | | | Detail |
| Detail | yoursport plus s.r.o. | 04430379 | | | Detail |
| Detail | YOUR SYSTEM, spol.s r.o. | 00174939 | | | Detail |
| Detail | Yumer s.r.o. | 22801464 | | | Detail |
| Detail | Yunex, s.r.o. | 09962638 | | | Detail |
| Detail | YURA Hotel Čeladná s.r.o. | 08164771 | | | Detail |
| Detail | YYYY s.r.o. | 28742745 | | | Detail |
| Detail | Zábrodská Klára, Mgr., advokát | 71333193 | | | Detail |
| Detail | Záchranný útvar Hasičského záchranného sboru České republiky | 75152304 | Česká republika | | Detail |
| Detail | Zadavatel | 00000000 | Jiná osoba | CZ | Detail |
| Detail | Zahradní architektura Martinov s.r.o. | 27395421 | | | Detail |
| Detail | ZAHRADNÍ ARCHITEKTURA TÁBOR s.r.o. | 14504588 | | | Detail |
| Detail | Zahradnické služby Měšice s.r.o. | 03542637 | Jiná osoba | CZ020 | Detail |
| Detail | Zahradnické úpravy s.r.o. | 27707113 | | | Detail |
| Detail | ZAHRADNICKÝ SERVIS s.r.o. | 28971396 | | | Detail |