| Detail | INSTA CZ s.r.o. | 25374311 | Another legal entity | CZ071 | Detail |
| Detail | INSTALL CZ, s.r.o. | 25876643 | Another entity | CZ080 | Detail |
| Detail | Institut klinické a experimentální medicíny | 00023001 | State contributory organization | CZ010 | Detail |
| Detail | Institut plánování a rozvoje hlavního města Prahy | 70883858 | Territorial self-governing unit or its contributory organization | CZ010 | Detail |
| Detail | Institut postgraduálního vzdělávání ve zdravotnictví | 00023841 | State contributory organization | CZ010 | Detail |
| Detail | Institut pro kriminologii a sociální prevenci | 48136841 | Czech Republic | | Detail |
| Detail | Institut pro regionální spolupráci, o.p.s. | 26657341 | Another entity | CZ064 | Detail |
| Detail | Institut pro veřejnou správu Praha | 70890293 | State contributory organization | CZ | Detail |
| Detail | Institute of Applied Biotechnologies a.s. | 27225712 | Another legal entity | CZ010 | Detail |
| Detail | Integrační centrum Praha o.p.s. | 24228320 | Another legal entity | CZ010 | Detail |
| Detail | Integrovaná střední škola Valašské Meziříčí | 00851574 | State contributory organization | CZ072 | Detail |
| Detail | Intellmaps s.r.o. | 06682456 | Another legal entity | CZ010 | Detail |
| Detail | INTERNATIONAL CZ, spol. s r.o. | 25532481 | Another legal entity | CZ072 | Detail |
| Detail | INTERNATIONAL EDUCATION CENTER, s.r.o. | 46962662 | Another legal entity | CZ063 | Detail |
| Detail | International Montessori School of Prague, mateřská škola a základní škola, s.r.o. | 27233464 | Another entity | CZ01 | Detail |
| Detail | International Neurodegenerative Disorders Research Center, zapsaný ústav | 11883383 | Another entity | CZ010 | Detail |
| Detail | INTEZA advice a.s. | 25084275 | Another legal entity | CZ080 | Detail |
| Detail | inveko-stavby s.r.o. | 25007114 | Another entity | CZ042 | Detail |
| Detail | INVENTYS s.r.o. | 47454245 | Another entity | CZ053 | Detail |
| Detail | INVEST - STAR, s.r.o. | 25452941 | Another entity | CZ042 | Detail |
| Detail | IP stav s.r.o. | 62064339 | Another entity | | Detail |
| Detail | IQLANDIA, o.p.s. | 25444565 | Another entity | CZ051 | Detail |
| Detail | Iron Analytics s.r.o. | 10786864 | Another legal entity | CZ071 | Detail |
| Detail | IRON STAR s.r.o. | 04135504 | Another legal entity | CZ010 | Detail |
| Detail | ISSO - Inženýrské stavby Sokolov, s. r. o. | 18248675 | Another legal entity | CZ041 | Detail |
| Detail | I.T.V. CZ s.r.o. | 25675109 | Another legal entity | CZ020 | Detail |
| Detail | IXPERTA s.r.o. | 27599523 | Czech Republic | CZ010 | Detail |
| Detail | J plus S s.r.o. | 25404750 | Another legal entity | CZ042 | Detail |
| Detail | Jablonecká energetická a.s. | 61539881 | Another legal entity | CZ051 | Detail |
| Detail | JACK WEST s.r.o. | 27797589 | Another legal entity | CZ072 | Detail |
| Detail | Jan Bouzek | 41547284 | Another entity | CZ063 | Detail |
| Detail | Jan Hofbauer | 15810500 | Another entity | CZ031 | Detail |
| Detail | Jan Král | 46392530 | Another entity | CZ020 | Detail |
| Detail | Jan Lebduška | 05049890 | Another entity | CZ020 | Detail |
| Detail | Jan Lovrant | 02312778 | Another entity | CZ | Detail |
| Detail | Jan Meduna | 10290257 | Another entity | CZ031 | Detail |
| Detail | Jan Novák | | Another entity | CZ020 | Detail |
| Detail | Jan Novák | | Another entity | CZ020 | Detail |
| Detail | Jan Pěch | 19576170 | Another entity | CZ063 | Detail |
| Detail | Jan Prokeš | | Another entity | CZ063 | Detail |
| Detail | Jan Stöhr | 66366780 | Czech Republic | CZ | Detail |
| Detail | Jana Večerková | 43431283 | Another entity | CZ | Detail |
| Detail | Jana Vohryzková | 63262339 | Another entity | CZ031 | Detail |
| Detail | Jana Zítková | | Another entity | CZ064 | Detail |
| Detail | Janáčkova filharmonie Ostrava, příspěvková organizace | 00373222 | Territorial self-governing unit or its contributory organization | CZ08 | Detail |
| Detail | Janáčkova konzervatoř v Ostravě, příspěvková organizace | 00602078 | Territorial self-governing unit or its contributory organization | CZ080 | Detail |
| Detail | JANKOSTAV s.r.o. | 25855581 | Another entity | CZ080 | Detail |
| Detail | Janúšovja, z.s. | 10876766 | Another legal entity | CZ072 | Detail |
| Detail | JAPA Vsetín spol. s r.o. | 25897357 | Another entity | CZ080 | Detail |
| Detail | JARO - kovovýroba s.r.o. | 26924781 | Another legal entity | CZ072 | Detail |
| Detail | JARO Česká Skalice, s.r.o. | 25934473 | Another legal entity | CZ052 | Detail |
| Detail | Jaromír Budín | 42412862 | Czech Republic | CZ031 | Detail |
| Detail | Jaroprodukt spol. s r.o. | 48529532 | Another legal entity | CZ064 | Detail |
| Detail | Jaroslav Domas | 46396560 | Another entity | CZ020 | Detail |
| Detail | JAROSLAV HAJÁTKO | 48892262 | Another entity | CZ063 | Detail |
| Detail | Jaroslav Hampl | 65717601 | Another entity | CZ052 | Detail |
| Detail | Jaroslav Huráb | 64993591 | Another entity | CZ080 | Detail |
| Detail | Jaroslav Jakeš | 49059653 | Another entity | CZ063 | Detail |
| Detail | Jaroslav Mikl | | Another entity | CZ064 | Detail |
| Detail | Jaroslav Přibyl | 74860178 | Another entity | CZ063 | Detail |
| Detail | Jaroslav Šafarik | 75897849 | Another entity | CZ063 | Detail |
| Detail | JATKA VERNER, s.r.o. | 27652807 | Another entity | CZ020 | Detail |
| Detail | JAW.cz s.r.o. | 28704011 | Another legal entity | CZ | Detail |
| Detail | Jazykové gymnázium Pavla Tigrida, Ostrava-Poruba, příspěvková organizace | 61989011 | Territorial self-governing unit or its contributory organization | CZ080 | Detail |
| Detail | JBR service s.r.o. | 24258636 | Another entity | CZ010 | Detail |
| Detail | JC Market s.r.o. | 25356992 | Another entity | CZ | Detail |
| Detail | Jdeme Autistům Naproti z.s. | 27041972 | Another legal entity | CZ071 | Detail |
| Detail | Jedlička Jaroslav, Ing. | 43496954 | Czech Republic | CZ | Detail |
| Detail | Jednota spotřební družstvo v Uherském Ostrohu | 00032310 | Another legal entity | CZ072 | Detail |
| Detail | JELÍNEK - výroba nábytku s.r.o. | 42866022 | Another legal entity | CZ | Detail |
| Detail | Jemnický mikroregion | 70289751 | Another entity | CZ063 | Detail |
| Detail | Jesle a mateřská škola Mrňousek, spolek | 05720079 | Another entity | CZ080 | Detail |
| Detail | JESSENIA a.s. | 26752051 | Another legal entity | CZ020 | Detail |
| Detail | Jezdecký klub Baník Ostrava | 60783419 | Another legal entity | CZ080 | Detail |
| Detail | Jezdecký klub Plzeň z.s. | 49774662 | Another entity | CZ032 | Detail |
| Detail | JFH inženýring, s.r.o. | 04055241 | Another legal entity | CZ010 | Detail |
| Detail | Jihočeská hospodářská komora | 48208248 | Another legal entity | CZ031 | Detail |
| Detail | Jihočeská Silva Nortica | 70659061 | Another entity | CZ031 | Detail |
| Detail | Jihočeské letiště České Budějovice a.s. | 26093545 | Another legal entity | CZ031 | Detail |
| Detail | Jihomoravské muzeum ve Znojmě, příspěvková organizace | 00092738 | Territorial self-governing unit or its contributory organization | CZ064 | Detail |
| Detail | Jihosepar a.s. | 28135067 | Another legal entity | CZ031 | Detail |
| Detail | JIPAMA s.r.o. | 25159224 | Another entity | CZ031 | Detail |
| Detail | Jiří Horák | 74602888 | Another entity | CZ052 | Detail |
| Detail | Jiří Janů | 48183032 | Czech Republic | CZ053 | Detail |
| Detail | Jiří Kejř - podnik stavebních a zemních prací s.r.o. | 27315347 | Another entity | CZ042 | Detail |
| Detail | Jiří Kopeček | 10084231 | Another entity | CZ064 | Detail |
| Detail | Jiří Kouřil | 48386740 | Another entity | CZ071 | Detail |
| Detail | Jiří Kyncl | 73370339 | Another entity | CZ080 | Detail |
| Detail | Jiří Marinka | 73099121 | Another entity | CZ071 | Detail |
| Detail | Jiří Němec | 71542175 | Another entity | CZ | Detail |
| Detail | Jiří Pavlica | 18649408 | Another entity | CZ072 | Detail |
| Detail | Jiří Pavlík | 07041039 | Another entity | CZ063 | Detail |
| Detail | Jiří Sixta | 16556755 | Another entity | CZ020 | Detail |
| Detail | Jiří Vondráček | 65037855 | Another entity | CZ063 | Detail |
| Detail | Jiří Zakouřil | 68996349 | Another entity | CZ020 | Detail |
| Detail | Jitka Chovítková | 01644637 | Another entity | CZ031 | Detail |
| Detail | JITRO Olomouc, o.p.s. | 29393647 | Another legal entity | CZ071 | Detail |
| Detail | JKT Group s.r.o. | 08631239 | Another entity | CZ051 | Detail |
| Detail | Job Sileo s.r.o. | 05729564 | Another entity | CZ080 | Detail |
| Detail | JORDÁK s.r.o. | 02222051 | Another entity | CZ010 | Detail |
