| Detail | SIBOM s.r.o. | 48395625 | | | Detail |
| Detail | SICAR, spol. s r.o. | 47541547 | | | Detail |
| Detail | S.ICZ a.s. | 26482444 | | | Detail |
| Detail | SIDA s.r.o. | 60697148 | | | Detail |
| Detail | SIEBERT + TALAŠ, spol. s r.o. | 06943187 | | | Detail |
| Detail | Siemens Healthcare, s.r.o. | 04179960 | | | Detail |
| Detail | Siemens Mobility, s.r.o. | 06931995 | | | Detail |
| Detail | Siemens, s.r.o. | 00268577 | Another legal entity | CZ | Detail |
| Detail | SIGI Aquatec s.r.o. | 28747321 | | | Detail |
| Detail | SIGMA GROUP a.s. | 60702001 | Another legal entity | CZ071 | Detail |
| Detail | Signal Projekt s.r.o. | 25525441 | | | Detail |
| Detail | SIGNIA, s.r.o. | 28298951 | | | Detail |
| Detail | Signify Commercial Czech Republic s.r.o. | 04264240 | | | Detail |
| Detail | SiJaMo s.r.o. | 28738861 | | | Detail |
| Detail | SIKS a.s. | 28213882 | | | Detail |
| Detail | SILASFALT s.r.o. | 62302370 | Another legal entity | CZ | Detail |
| Detail | silkroad brand s.r.o. | 14319055 | | | Detail |
| Detail | SILNET, s.r.o. | 06684939 | | | Detail |
| Detail | Silnice Cajk, s.r.o. | 08894311 | | | Detail |
| Detail | SILNICE ČÁSLAV - HOLDING, a.s. | 25261282 | Another entity | CZ020 | Detail |
| Detail | Silnice doprava a.s. | 25827898 | | | Detail |
| Detail | SILNICE HEJDA s.r.o. | 25189565 | | | Detail |
| Detail | Silnice Chleby s.r.o. | 22192913 | | | Detail |
| Detail | Silnice Klatovy a.s. | 45357307 | | | Detail |
| Detail | Silnice Kubát s.r.o. | 21694052 | Czech Republic | CZ020 | Detail |
| Detail | SILNICE MORAVA s.r.o. | 25357352 | | | Detail |
| Detail | Silnice Topolany a.s. | 05758734 | | | Detail |
| Detail | Silnice TS s.r.o. | 25796160 | | | Detail |
| Detail | SILNICE.CZ s. r. o. | 26792711 | Another legal entity | CZ080 | Detail |
| Detail | Silniční inženýrská společnost, s.r.o. | 46885315 | | | Detail |
| Detail | Silniční vývoj - ZDZ spol. s r.o. | 64507181 | | | Detail |
| Detail | Siluett plast, s.r.o. | 29115361 | | | Detail |
| Detail | Silvafortis s.r.o. | 23880139 | | | Detail |
| Detail | SILVAGRO s.r.o. | 27476162 | Another legal entity | CZ052 | Detail |
| Detail | Silvan Špicar | 73030406 | Another entity | CZ080 | Detail |
| Detail | Silverton s.r.o. | 24283410 | | | Detail |
| Detail | Simbit Enterprises s.r.o. | 07177810 | | | Detail |
| Detail | SIMEXA s.r.o. | 17545196 | | | Detail |
| Detail | Simona Plast-Technik s.r.o. | 25496344 | Czech Republic | CZ042 | Detail |
| Detail | Simona Zagora | 03605108 | Another legal entity | CZ020 | Detail |
| Detail | Simple Lift s.r.o. | 04352246 | | | Detail |
| Detail | Simply LED, s.r.o. | 17464307 | | | Detail |
| Detail | Simply Pro Security s.r.o. | 06655947 | | | Detail |
| Detail | SimulationsDienstleistungsZentrum GmbH | | | | Detail |
| Detail | SimulPlast, s.r.o. | 27809862 | | | Detail |
| Detail | Simuverse GmbH | | | | Detail |
| Detail | SimVR s.r.o. | 18043356 | | | Detail |
| Detail | SINOPORT s.r.o. | 09080341 | | | Detail |
| Detail | "sinpps s.r.o." | 62584332 | | | Detail |
| Detail | Sintech-Energy s.r.o. | 09204300 | | | Detail |
| Detail | SINTEX, a.s. | 25298496 | | | Detail |
| Detail | SinuCraft s.r.o. | 22179569 | | | Detail |
| Detail | SIOT Trade s.r.o. | 28970535 | | | Detail |
| Detail | SIS RENEWABLES s.r.o. | 08721815 | | | Detail |
| Detail | SISKO spol. s r. o. | 47155558 | | | Detail |
| Detail | SITA B.V. - organizační složka pro Českou republiku | 70899061 | | | Detail |
| Detail | SITAP, s.r.o. | 45195404 | Another legal entity | CZ071 | Detail |
| Detail | SITEL, spol. s r.o. | 44797320 | | | Detail |
| Detail | SITEMAN s.r.o. | 21246041 | | | Detail |
| Detail | SITEQ s.r.o. | 09445536 | | | Detail |
| Detail | Sitewell s.r.o. | 25007203 | | | Detail |
| Detail | SITEZ s.r.o. | 28662814 | | | Detail |
| Detail | Sitkeys s.r.o. | 17866715 | | | Detail |
| Detail | SIVAK TECH s.r.o. | 23884916 | | | Detail |
| Detail | SIWECO, s.r.o. | 25999664 | | | Detail |
| Detail | SIZ s.r.o. | 27265480 | | | Detail |
| Detail | SK ANNABERG z.s. | 26670852 | Another legal entity | CZ080 | Detail |
| Detail | SK Baník Libušín, z.s. | 48705888 | Another entity | CZ020 | Detail |
| Detail | SK Březolupy, z.s. | 48491993 | Czech Republic | CZ072 | Detail |
| Detail | SK BÝŠŤ, z.s. | 46494430 | Another legal entity | CZ052 | Detail |
| Detail | SK Design, s.r.o. | 25330551 | | | Detail |
| Detail | SK Dynamo České Budějovice akademie, z.s. | 47234199 | Another legal entity | CZ031 | Detail |
| Detail | SK Horní Staré Město, z.s. | 47466596 | Another entity | CZ052 | Detail |
| Detail | SK Hrachovec, z.s. | 68898525 | Another entity | CZ072 | Detail |
| Detail | SK JSMEINLINE, z. s. | 07465921 | | | Detail |
| Detail | SK Kladno, z. s. | 16979770 | Another entity | CZ020 | Detail |
| Detail | SK Líšeň | 13691732 | Another legal entity | CZ064 | Detail |
| Detail | SK Olbramovice z.s. | 47082275 | Another legal entity | CZ020 | Detail |
| Detail | SK Olympie Dolní Břežany z.s. | 49855212 | Another legal entity | CZ020 | Detail |
| Detail | SK PETŘÍN PLZEŇ z.s. | 00479250 | Another entity | CZ032 | Detail |
| Detail | S&K PUBLIC spol. s r.o. | 46902589 | | | Detail |
| Detail | SK Řečkovice, z.s. | 44962100 | State contributory organization | CZ064 | Detail |
| Detail | SK Slavoj Volyně, z.s. | 62519719 | Another legal entity | CZ031 | Detail |
| Detail | SK Sokol Zlatníky, z.s. | 47002638 | Another entity | CZ020 | Detail |
| Detail | SK SPARTAK Příbram, spolek | 61904899 | Another entity | CZ020 | Detail |
| Detail | SK Sportino z. s. | 03757218 | Another entity | CZ080 | Detail |
| Detail | SK Starý Plzenec z.s. | 45330581 | Another entity | CZ032 | Detail |
| Detail | SK stavby - zámečnictví a.s. | 09305394 | | | Detail |
| Detail | SK stavitel plus s.r.o. | 18025731 | | | Detail |
| Detail | SK Strakonice 1908, z.s. | 22890947 | Another legal entity | CZ031 | Detail |
| Detail | Skanska a.s. | 26271303 | Another entity | CZ | Detail |
| Detail | Skanska Transbeton, s.r.o. | 60471778 | Another entity | CZ010 | Detail |
| Detail | SKI Vítkovice - Bílá z.s. | 70632219 | Another legal entity | CZ080 | Detail |
| Detail | SKILL s.r.o. | 48039039 | | | Detail |
| Detail | SKINA s.r.o. | 22524258 | | | Detail |
| Detail | SKL RECYKLOSTAV s.r.o. | 29010161 | Another entity | CZ02 | Detail |
| Detail | Sklostroj Turnov CZ, s.r.o. | 60111739 | Another entity | CZ051 | Detail |
| Detail | SKOLENKA s.r.o. | 03929591 | | | Detail |
| Detail | SKOS s.r.o. | 62027077 | | | Detail |
| Detail | SKR stav, s.r.o. | 26961474 | | | Detail |
| Detail | SKS s.r.o. | 43420117 | | | Detail |
| Detail | Skymat s.r.o. | | | | Detail |
| Detail | SKYNER s.r.o. | 01612875 | | | Detail |
| Detail | Skypartners by Energylink s.r.o. | 25000781 | | | Detail |
| Detail | SK9, s.r.o. | 28751035 | | | Detail |
| Detail | SLADOVNY SOUFFLET ČR, a.s. | 26173174 | Another legal entity | CZ071 | Detail |
| Detail | SLAP cz s.r.o. | 26041651 | | | Detail |
| Detail | Slatinné lázně Třeboň s.r.o. | 25179896 | Another legal entity | CZ031 | Detail |
| Detail | Slavia pojišťovna a.s. | 60197501 | | | Detail |
| Detail | Slemr Spedition s.r.o. | 22802819 | Another legal entity | CZ042 | Detail |
| Detail | Slévárna Chomutov s.r.o. | 22113665 | | | Detail |
| Detail | Slévárna Kuřim, a.s. | 29291721 | Another entity | CZ064 | Detail |
| Detail | SLÉVÁRNA, spol. s r.o. | 45539367 | Another entity | CZ052 | Detail |
| Detail | Slévárny Třinec, a.s. | 25830716 | Another entity | CZ080 | Detail |
| Detail | Slezská důlní díla a.s. | 04200667 | | | Detail |
| Detail | SLEZSKÉ STAVBY OPAVA s.r.o. | 48391212 | | | Detail |
| Detail | Slezské zemské muzeum | 00100595 | State contributory organization | CZ080 | Detail |
| Detail | SLIG Consulting, s. r. o. | 25587081 | Another legal entity | CZ064 | Detail |
| Detail | Slivkoff, s.r.o. | 26156377 | Another entity | CZ | Detail |
| Detail | SLORAMA, spol. s r.o. | | | | Detail |
| Detail | SLOUPSKÝ s.r.o. | 25844431 | Another legal entity | CZ071 | Detail |
| Detail | Slovácká pekárna s.r.o. | 14004755 | Another entity | CZ | Detail |
| Detail | Slovácké muzeum v Uherském Hradišti, příspěvková organizace | 00092126 | Territorial self-governing unit or its contributory organization | CZ072 | Detail |
| Detail | SLOVENSKE ENERGETICKE STROJARNE, a.s. | | | | Detail |
| Detail | SLOVPUMP-TRADE, s.r.o. | 36029670 | | | Detail |
| Detail | Sludge s.r.o. | 08416788 | Another legal entity | CZ020 | Detail |
| Detail | SLUDO s.r.o. | 07716303 | | | Detail |
| Detail | Služba, výrobní družstvo | 00028819 | | | Detail |
| Detail | SLUŽBY LIŠOV, s.r.o. | 25157264 | Another legal entity | CZ | Detail |
| Detail | Služby Loučovice s.r.o. | 04825365 | Another legal entity | CZ031 | Detail |
| Detail | Služby města Bechyně, p.o. | 06678769 | Territorial self-governing unit or its contributory organization | CZ031 | Detail |
| Detail | Služby města Bzence, příspěvková organizace | 71217151 | Territorial self-governing unit or its contributory organization | CZ064 | Detail |
| Detail | SLUŽBY MĚSTA JIHLAVY s.r.o. | 60727772 | Another legal entity | CZ063 | Detail |
| Detail | Služby města Jindřichův Hradec s.r.o. | 26043335 | Another legal entity | CZ031 | Detail |
| Detail | Služby města Napajedla, příspěvková organizace | 71240063 | Territorial self-governing unit or its contributory organization | CZ072 | Detail |
| Detail | Služby města Pardubic a.s. | 25262572 | Another legal entity | CZ053 | Detail |
| Detail | Služby města Slušovice, příspěvková organizace | 75158108 | Territorial self-governing unit or its contributory organization | CZ072 | Detail |
| Detail | Služby města Týniště nad Orlicí | 42885086 | Another entity | CZ052 | Detail |
| Detail | Služby Města Veselí nad Moravou | 46936777 | Territorial self-governing unit or its contributory organization | CZ064 | Detail |
| Detail | Služby městyse Pozlovice s.r.o. | 29218934 | Another legal entity | CZ072 | Detail |
| Detail | Služby obce Červená Voda, s.r.o. | 01582836 | Territorial self-governing unit or its contributory organization | CZ053 | Detail |
| Detail | Služby obce Město Albrechtice s.r.o. | 25844067 | Another entity | CZ080 | Detail |
| Detail | Služby Praha s.r.o. | 05073669 | Another entity | CZ | Detail |
| Detail | Sly Fox s.r.o. | 09223550 | | | Detail |
| Detail | Smart Assets s.r.o. | 21461104 | | | Detail |
| Detail | SMART ENERGY CENTRUM s.r.o. | 06007210 | Another legal entity | CZ031 | Detail |
| Detail | Smart Informatics s.r.o. | 03781011 | | | Detail |
| Detail | Smart Interier s.r.o. | 14054531 | | | Detail |
| Detail | smart maintenance s.r.o. | 06904149 | Czech Republic | CZ | Detail |
| Detail | Smart Medical Solutions, a.s. | 03583147 | | | Detail |