| Detail | Gymnázium, Nový Jičín, příspěvková organizace | 00601675 | Territorial self-governing unit or its contributory organization | CZ080 | Detail |
| Detail | Gymnázium, Ostrava-Hrabůvka, příspěvková organizace | 00842745 | Czech Republic | CZ080 | Detail |
| Detail | Gymnázium Otrokovice | 61716693 | Territorial self-governing unit or its contributory organization | CZ072 | Detail |
| Detail | Gymnázium Petra Bezruče, Frýdek-Místek, příspěvková organizace | 00601411 | State contributory organization | CZ080 | Detail |
| Detail | Gymnázium P. Křížkovského s uměleckou profilací, s.r.o. | 25332201 | Another legal entity | CZ064 | Detail |
| Detail | Gymnázium, Praha 7, Nad Štolou 1 | 61385476 | State contributory organization | CZ01 | Detail |
| Detail | Gymnázium Rožnov pod Radhoštěm | 00843393 | Territorial self-governing unit or its contributory organization | CZ072 | Detail |
| Detail | Gymnázium, Střední odborná škola, Základní škola a Mateřská škola pro sluchově postižené, Praha 2, Ječná 27 | 61388149 | Territorial self-governing unit or its contributory organization | CZ010 | Detail |
| Detail | Gymnázium, Třinec, příspěvková organizace | 00601390 | Territorial self-governing unit or its contributory organization | CZ080 | Detail |
| Detail | Gymnázium Uherské Hradiště | 60371684 | Territorial self-governing unit or its contributory organization | CZ072 | Detail |
| Detail | Gymnázium Valašské Klobouky | 61716707 | Territorial self-governing unit or its contributory organization | CZ072 | Detail |
| Detail | Gymnázium, Žatec, Studentská 1075, příspěvková organizace | 61357278 | Territorial self-governing unit or its contributory organization | | Detail |
| Detail | Gymnázium Zlín - Lesní čtvrť | 00559105 | Territorial self-governing unit or its contributory organization | CZ072 | Detail |
| Detail | H2B2 Electrolysis Technologies S.L. | | | | Detail |
| Detail | H3 ateliér s.r.o. | 27516318 | | | Detail |
| Detail | Hába Jaroslav, Ing. | 12168891 | | | Detail |
| Detail | Habilis Steel spol. s r.o. | 24732061 | Another legal entity | CZ | Detail |
| Detail | Hach Lange s.r.o | 27182151 | | | Detail |
| Detail | HADREX CZ, s. r. o. | 26810689 | | | Detail |
| Detail | Hadr & Kyblík Profi, s.r.o. | 29454239 | | | Detail |
| Detail | HAGEMANN a.s. | 26826925 | Another entity | CZ080 | Detail |
| Detail | HAITECO CZ s.r.o. | 25922190 | | | Detail |
| Detail | Hakov, a.s. | 48392855 | | | Detail |
| Detail | HALALI, všeobecná pojišťovna, a.s. | 60192402 | | | Detail |
| Detail | HAMPR a.s. | 61859362 | | | Detail |
| Detail | Hamzova odborná léčebna pro děti a dospělé | 00183024 | State contributory organization | CZ053 | Detail |
| Detail | Hana Brůhová | 88040119 | | | Detail |
| Detail | Hana CARVÁNOVÁ | 45082774 | | | Detail |
| Detail | Hanácká zemědělská společnost Jevíčko a.s. | 48173053 | Another legal entity | CZ | Detail |
| Detail | Hana Horáková | 14031230 | | | Detail |
| Detail | Haná Metal Wind, s.r.o. | 26903989 | Another entity | CZ071 | Detail |
| Detail | Handball Club Dukla Praha (HC Dukla Praha) | 49369512 | State contributory organization | CZ010 | Detail |
| Detail | HANES s.r.o. | 26131919 | | | Detail |
| Detail | Hanhart Morkovice s.r.o. | 60755962 | Another legal entity | CZ072 | Detail |
| Detail | H.A.N.S. stavby, a.s. | 27124355 | | | Detail |
| Detail | Hans Wendel CZ s.r.o. | 25064461 | | | Detail |
| Detail | HANTÁLY a.s. | 42324068 | Another legal entity | CZ064 | Detail |
| Detail | HANZA Mechanics Kunovice s.r.o. | 26217465 | Another legal entity | CZ072 | Detail |
| Detail | HANZL ELEKTROMONTÁŽE s.r.o. | 27301010 | | | Detail |
| Detail | Happy Berner s.r.o. | 09000321 | | | Detail |
| Detail | Happy Sport Opava, z.s. | 65888774 | Another entity | CZ080 | Detail |
| Detail | Hapreso Steel s.r.o. | 17242380 | | | Detail |
| Detail | HARASIM stavby s.r.o. | 25869256 | | | Detail |
| Detail | HARKO s.r.o. | 63496585 | | | Detail |
| Detail | Harmonie, příspěvková organizace | 00846384 | Territorial self-governing unit or its contributory organization | CZ080 | Detail |
| Detail | HARTMANN - RICO a.s. | 44947429 | | | Detail |
| Detail | HartSoft s.r.o. | 17152216 | | | Detail |
| Detail | HaSaM, s.r.o. | 49968319 | | | Detail |
| Detail | HASEO, v.o.s. | 47984830 | | | Detail |
| Detail | Hasičská vzájemná pojišťovna, a.s. | 46973451 | | | Detail |