| Detail | KAISER s.r.o. | 26733102 | Another legal entity | CZ020 | Detail |
| Detail | KAK zakázkový servis s.r.o. | 06294863 | | | Detail |
| Detail | KALAHA a.s. | 25562151 | | | Detail |
| Detail | Kalcit s.r.o. | 26245311 | Another entity | CZ064 | Detail |
| Detail | Kalin, spol. s r.o. | 25607782 | | | Detail |
| Detail | KALTMEYER s.r.o. | 25753681 | | | Detail |
| Detail | KALVEI, s.r.o. | 60720832 | | | Detail |
| Detail | KAMEBA s.r.o. | 21493081 | | | Detail |
| Detail | KÁMEN ENGINEERING s.r.o. | 47455560 | Another legal entity | CZ052 | Detail |
| Detail | Kamenolom KUBO s.r.o. | 25447581 | | | Detail |
| Detail | KAMENOLOMY ČR s.r.o. | 49452011 | Another legal entity | CZ | Detail |
| Detail | KAMI PROFIT, s.r.o. | 35943301 | | | Detail |
| Detail | KAMI PROFIT, s.r.o. | | | | Detail |
| Detail | KAMI PROFIT, s.r.o., odštěpný závod | 05264758 | | | Detail |
| Detail | Kamil Elšík | 41580125 | | | Detail |
| Detail | Kamil Gellner | 14857979 | Another entity | CZ042 | Detail |
| Detail | Kamil Jůzl | 72616181 | | | Detail |
| Detail | Kamil Kublák | 65493656 | Another entity | CZ080 | Detail |
| Detail | Kamil Maralík | 08656258 | | | Detail |
| Detail | Kamil Mrva Architects & partners s.r.o. | 22277811 | | | Detail |
| Detail | Kamil Mrva Architects, s.r.o. | 28647611 | | | Detail |
| Detail | Kamila Vojtová | 48283681 | | | Detail |
| Detail | KAMON Plzeň s.r.o. | 21508674 | | | Detail |
| Detail | KANADSKÉ SRUBY TÁBOR s. r. o. | 28108078 | | | Detail |
| Detail | KANAL - Serv s.r.o. | 28140371 | | | Detail |
| Detail | Kancelář architekta města Brna, příspěvková organizace | 05128820 | Territorial self-governing unit or its contributory organization | CZ064 | Detail |
| Detail | Kancelář finančního arbitra | 72546522 | Czech Republic | CZ010 | Detail |
| Detail | Kancelář generálního komisaře účasti České republiky na Všeobecné světové výstavě EXPO | 68378637 | State contributory organization | CZ01 | Detail |
| Detail | Kancelář prezidenta republiky | 48136000 | Czech Republic | | Detail |
| Detail | Kancelář veřejného ochránce práv a ochránce práv dětí | 70836981 | Czech Republic | CZ | Detail |
| Detail | Kancelářské stroje s.r.o. | 26467658 | | | Detail |
| Detail | KANIA a.s. | 26817853 | | | Detail |
| Detail | KANONA a.s. | 04163664 | | | Detail |
| Detail | Kanonie premonstrátů v Želivě | 60860871 | Another entity | CZ063 | Detail |
| Detail | KAPA ZLÍN, spol. s r.o. | 46904107 | Another legal entity | CZ072 | Detail |
| Detail | KAPKA spol. s r.o. | 62967983 | | | Detail |
| Detail | KAPP BAU s.r.o. | 17379440 | | | Detail |
| Detail | KAPPENBERGER + BRAUN, Elektro-Technik spol. s r.o. | 16736907 | | | Detail |
| Detail | KAPSIT services s.r.o. | 24176915 | | | Detail |
| Detail | KAR group, a.s. | 25823035 | Another legal entity | CZ080 | Detail |
| Detail | KARASKO CZ s.r.o. | 27854141 | | | Detail |
| Detail | KARBOTECHNIK spol. s r. o. | 49789953 | | | Detail |
| Detail | KARBOX s.r.o. | 26002370 | | | Detail |
| Detail | KARDI AI Technologies s.r.o. | 14328127 | Another legal entity | CZ | Detail |
| Detail | Kardio - Line spol. s r.o. | 46994769 | | | Detail |
| Detail | KARDIO VS s.r.o. | 49453165 | | | Detail |
| Detail | Karel Bartáček | 76387682 | | | Detail |
| Detail | Karel Benda | 64888207 | Czech Republic | CZ032 | Detail |
| Detail | Karel Fraus | 19967586 | | | Detail |
| Detail | Karel Hájek | 87993121 | | | Detail |
| Detail | Karel Hampl | 69739005 | | | Detail |
| Detail | Karel Helan | 15088855 | | | Detail |
| Detail | Karel Hladík | 13470221 | | | Detail |
| Detail | Karel Hrnčíř - BIOMAG | 18848125 | Czech Republic | CZ052 | Detail |
| Detail | Karel Jandák | 15337880 | | | Detail |
| Detail | Karel Kut | 74777785 | | | Detail |
| Detail | Karel Mudroch | 46757783 | | | Detail |
| Detail | Karel Myslikovjan | 68167407 | | | Detail |
| Detail | Karel Novotný | 60625589 | | | Detail |
| Detail | Karel Prášil | 71448543 | | | Detail |
| Detail | Karel Rychetský | 67448623 | | | Detail |
| Detail | Karel Skopec | 12800007 | | | Detail |
| Detail | Karel Sobel | 67793479 | | | Detail |
| Detail | Karel Starý | 68638922 | Another entity | CZ063 | Detail |
| Detail | Karel Šefrna | 69956464 | | | Detail |
| Detail | Karel Štefek | 75323150 | | | Detail |
| Detail | Karel Talafous | 04509331 | | | Detail |
| Detail | Karel Tinka | 87208709 | | | Detail |
| Detail | Karel Vetešník | 70960348 | | | Detail |
| Detail | Karel Zukal | 75067102 | | | Detail |
| Detail | KARETA s.r.o. | 62360213 | | | Detail |
| Detail | KARFO velkoobchod s.r.o. | 26872382 | | | Detail |
| Detail | Kärcher spol. s r. o. | 48535761 | | | Detail |
| Detail | Karla Dostálová | 05183359 | | | Detail |
| Detail | KARLA spol. s r.o. | 14613182 | Another legal entity | CZ08 | Detail |
| Detail | Karlínblok s.r.o. | 02937182 | | | Detail |
| Detail | Karlova Firma s.r.o. | 24248011 | | | Detail |
| Detail | Karmelitánské nakladatelství, s.r.o. | 63906953 | Another legal entity | CZ010 | Detail |
| Detail | KAR-mobil s.r.o. | 25352776 | | | Detail |
| Detail | Karnes s.r.o. | 05619246 | | | Detail |
| Detail | KARO - Leather Company s.r.o. | 28205413 | Another legal entity | CZ | Detail |
| Detail | KARO inženýrské sítě s.r.o. | 26826470 | | | Detail |
| Detail | Karol Lušpai | | | | Detail |
| Detail | KAROLAS Legal s.r.o., advokátní kancelář | 05732069 | | | Detail |
| Detail | Karolína Bártů | 07069014 | | | Detail |
| Detail | Karolína Macháčková Janská | 76038556 | | | Detail |
| Detail | KARSCH ELEKTRO s.r.o. | 27310159 | | | Detail |
| Detail | Karsit Agro, a.s. | 64829642 | Another legal entity | CZ052 | Detail |
| Detail | Kartáče Souček, s.r.o. | 28780795 | | | Detail |
| Detail | KASKA s.r.o. | 26080966 | | | Detail |
| Detail | KASRO spol. s r.o. | 60276258 | | | Detail |
| Detail | KASTEN spol. s r.o. | 62954890 | | | Detail |
| Detail | KASTRO office s. r. o. | 03162273 | | | Detail |
| Detail | KASTT, spol. s r.o. | 13583948 | | | Detail |
| Detail | KATAFORESIS CZ, s.r.o. | 26204622 | Another legal entity | CZ | Detail |
| Detail | Katastrální úřad pro hlavní město Prahu | 71185224 | Czech Republic | CZ01 | Detail |
| Detail | Katastrální úřad pro Jihočeský kraj | 00213691 | Czech Republic | CZ031 | Detail |
| Detail | Katastrální úřad pro Jihomoravský kraj | 00213730 | Czech Republic | CZ064 | Detail |
| Detail | Katastrální úřad pro Královéhradecký kraj | 71185241 | Czech Republic | CZ052 | Detail |
| Detail | Katastrální úřad pro Liberecký kraj | 00213713 | Czech Republic | CZ051 | Detail |
| Detail | Katastrální úřad pro Moravskoslezský kraj | 00849871 | Czech Republic | CZ080 | Detail |
| Detail | Katastrální úřad pro Olomoucký kraj | 71185186 | Czech Republic | CZ071 | Detail |
| Detail | Katastrální úřad pro Pardubický kraj | 00213721 | Czech Republic | CZ053 | Detail |
| Detail | Katastrální úřad pro Plzeňský kraj | 00213705 | Czech Republic | CZ032 | Detail |
| Detail | Katastrální úřad pro Středočeský kraj | 00213683 | Czech Republic | CZ020 | Detail |
| Detail | Katastrální úřad pro Ústecký kraj | 71185194 | Czech Republic | CZ042 | Detail |
| Detail | Katastrální úřad pro Vysočinu | 71185208 | Czech Republic | CZ | Detail |
| Detail | Katastrální úřad pro Zlínský kraj | 71185216 | Czech Republic | CZ072 | Detail |
| Detail | Katedrální kapitula u sv. Štěpána v Litoměřicích | 46771930 | Another entity | CZ042 | Detail |
| Detail | Kateřina Humlová | | Another entity | CZ020 | Detail |
| Detail | Kateřina Hurtová | 01533401 | | | Detail |
| Detail | Kateřina Jandová | 05326460 | | | Detail |
| Detail | Kateřina Koláčková | 08563977 | | | Detail |
| Detail | Kateřina Ryšková | 22453491 | | | Detail |
| Detail | Kateřina Sedlářová | 72052899 | | | Detail |
| Detail | Kateřina Šarochová | 49191586 | | | Detail |
| Detail | Katko s.r.o. | 27179354 | | | Detail |
| Detail | KAUCHUK AD | | | | Detail |
| Detail | KAVOSTAV s.r.o. | 28791193 | | | Detail |
| Detail | KAVYL, spol. s r.o. | 49975358 | Another legal entity | CZ063 | Detail |
| Detail | KAZIKO a.s. | 26693054 | | | Detail |
| Detail | KB servis - elektro, s.r.o. | 26416689 | | | Detail |
| Detail | KBM-International s.r.o. | 45359644 | | | Detail |
| Detail | KC bus, s.r.o. | 23121513 | | | Detail |
| Detail | kcarch s.r.o. | 28999070 | | | Detail |
| Detail | KD planeta s. r. o. | 27480186 | Another entity | CZ | Detail |
| Detail | KD Pragma, a.s. | 25676644 | | | Detail |
| Detail | KECIP, s.r.o. | 25426842 | | | Detail |
| Detail | Keinela s.r.o. | 23554568 | | | Detail |
| Detail | KELCOM Havlíčkův Brod spol. s r.o. | 49812700 | | | Detail |
| Detail | KELCOM International, spol. s r.o. | 15061680 | | | Detail |
| Detail | KELI stavby s.r.o. | 28580478 | | | Detail |
| Detail | KELY 99 s.r.o. | 25559001 | Another legal entity | CZ064 | Detail |
| Detail | KEMIFLOC a.s. | 47674695 | | | Detail |
| Detail | KEMOstav s.r.o. | 06041167 | | | Detail |
| Detail | Kemwater ProChemie s.r.o. | 62954237 | | | Detail |
| Detail | KENVI CZ s.r.o. | 28825039 | Another entity | CZ052 | Detail |
| Detail | Kepys s.r.o. | 24236951 | | | Detail |
| Detail | KERAMO D - Dohorák s.r.o. | 27716104 | | | Detail |
| Detail | KERNBACH s.r.o. | 29443776 | Another legal entity | CZ | Detail |
| Detail | Kernel.cz s.r.o. | 25597221 | | | Detail |
| Detail | KEROUŠ s.r.o. | 28085604 | | | Detail |
| Detail | KEST s.r.o. | 25915185 | | | Detail |
| Detail | KESTRINA PEZA | 71130233 | Another entity | CZ010 | Detail |
| Detail | KEŠKA - FM s.r.o. | 25857851 | | | Detail |
| Detail | Key promotion, s.r.o. | 28939883 | | | Detail |
| Detail | KEY SOLUTION s.r.o. | 24815284 | | | Detail |
| Detail | KeyWord s.r.o. | 02394332 | | | Detail |
| Detail | KFJ building s.r.o. | 14075024 | | | Detail |
| Detail | KFJ project s.r.o. | 14075245 | | | Detail |
| Detail | KFJ s.r.o. | 06295533 | | | Detail |
| Detail | KGM Trade s.r.o. | 24768880 | | | Detail |
| Detail | KH Hotels s.r.o. | 28410246 | Another legal entity | CZ | Detail |
| Detail | KH Profi s.r.o. | 05773709 | | | Detail |
| Detail | K+H Realizace s.r.o. | 21978425 | | | Detail |
| Detail | KH servis a.s. | 45279748 | | | Detail |
| Detail | K&I Forest s.r.o. | 03679322 | | | Detail |
| Detail | KIGMAX HRANICE s.r.o. | 27808785 | Another legal entity | CZ080 | Detail |
| Detail | KIMERA CZ s.r.o. | 10810013 | | | Detail |
| Detail | KIMM Invest s.r.o. | 26436515 | Another legal entity | CZ020 | Detail |
| Detail | Kirantoni SRL | | | | Detail |
| Detail | KIRCHNER s.r.o. | 25505220 | | | Detail |
| Detail | KIRK, spol. s r.o. | 42867941 | | | Detail |
| Detail | Kitl s.r.o. | 46712518 | Another entity | CZ051 | Detail |
| Detail | KK LIGNUM s.r.o. | 28719379 | | | Detail |
| Detail | K-K METAL, a.s. | 60722185 | Another legal entity | CZ071 | Detail |
| Detail | KKS, spol. s r.o. | 42340802 | | | Detail |
| Detail | KK-TECH s.r.o. | 05728541 | | | Detail |
| Detail | KL system s.r.o. | 26272334 | | | Detail |
| Detail | Kladenská dopravní a strojní s.r.o. | 28170679 | | | Detail |
| Detail | KLAPCON, s.r.o. | 21175781 | | | Detail |
| Detail | KLARITI s.r.o. | 60199415 | Another legal entity | CZ | Detail |
| Detail | KLARO, spol. s r.o. | 61460478 | | | Detail |
| Detail | KLAS Jaroměřice, spol. s r.o. | 25305379 | | | Detail |
| Detail | KLAS Nekoř a.s. | 25255321 | | | Detail |
| Detail | Klasa Servis s.r.o. | 22545816 | | | Detail |
| Detail | Klášter dominikánů Jablonné v Podještědí | 18383807 | Another legal entity | CZ051 | Detail |
| Detail | Klatovská dopravní společnost s.r.o. | 28005872 | | | Detail |
| Detail | Klatovská STK, s.r.o. | 25201077 | | | Detail |
| Detail | Klatovské rybářství - správa a.s. | 49791443 | Another legal entity | CZ032 | Detail |
| Detail | KLEINWÄCHTER holding s.r.o. | 05539528 | Another legal entity | CZ080 | Detail |
| Detail | KLEMENT Construction a.s. | 04449533 | | | Detail |
| Detail | KLEMPÍK - Stav, s.r.o. | 26184087 | | | Detail |
| Detail | Klempířství Hlinovský s.r.o. | 27117600 | | | Detail |
| Detail | KLIER nábytek s.r.o. | 26082471 | Another legal entity | CZ010 | Detail |
| Detail | Klika & Dvořák, s.r.o. | 25145959 | | | Detail |
| Detail | KLIMA STORE s.r.o. | 09001905 | | | Detail |
| Detail | Klimabott s.r.o. | 28347889 | Czech Republic | CZ064 | Detail |
| Detail | KLIMAdesign s.r.o. | 25010859 | | | Detail |
| Detail | KLIMAK, s.r.o. | 48534595 | | | Detail |
| Detail | KLIMASYSTEMS s.r.o. | 06915914 | | | Detail |
| Detail | Klimatizace Novák s.r.o. | 24490261 | | | Detail |
| Detail | Klimatizace Strmiska s.r.o. | 08789037 | | | Detail |
| Detail | Klimatizace365 s.r.o. | 04981618 | | | Detail |
| Detail | Klimeš Pavel, PhDr. | 47365501 | | | Detail |
| Detail | KLIMEX CZ, spol. s r.o. | 49549693 | | | Detail |
| Detail | Klinika TES s.r.o. | 22369872 | Another entity | CZ | Detail |
| Detail | KLM SECURITY GROUP s.r.o. | 04260431 | | | Detail |
| Detail | KLOBOUK film s.r.o. | 28399706 | | | Detail |
| Detail | KL-PLAN s.r.o. | 04011236 | | | Detail |