| Kit-Electro |
Zelenograd |
| Komenergo |
Moscow |
| ComSystemYar |
Yaroslavl |
| Comsystems |
Kostroma |
| Comtec plus |
Cherepovets |
| Comfort |
Moscow |
| Comfort Maximum |
Rostov-on-Don |
| COMFORTABLE HOUSE |
Moscow |
| Comfort build |
Moscow |
| CONA-Svyaz |
Moscow |
| CONATEM, concern |
Elektrostal |
| Conven, ITC |
Moscow |
| ConVent Neophyte |
Moscow |
| Conversion-Housing |
Moscow |
| Convins, construction company |
Moscow |
| ConverseStroy |
Moscow |
| Air conditioning |
Moscow |
| Concord |
Saint Petersburg |
| Competitor, construction and industrial association |
Kursk |
| Connect Stroy |
Korolev |
| Conner |
Saint Petersburg |
| Conrise |
Moscow |
| Constant - 21st century |
Yaroslavl |
| Designer service, STC |
Moscow |
| Kontek Siberia |
Novosibirsk |
| CONSIN |
Balabanovo |
| Continent-R |
Samara |
| Continent |
Moscow |
| Contact |
Moscow |
| Contract Limited |
Moscow |
| Cold Control |
Moscow |
| Kontur-West |
Moscow |
| Kontus, production and technical enterprise |
Moscow |
| Conceptor |
Yaroslavl |
| Koopstroy |
Ryazan |
| Coral, subsea construction department |
Konstantinovo |
| Corilus |
Moscow |
| Corex |
Kaluga |
| Peddler |
May |
| KorolevRepair |
Korolev |
| Corona telephone company |
Nizhny Novgorod |
| CorpCo |
Moscow |
| Royal Gate |
Saint Petersburg |
| NPO CorrZashchita |
Moscow |
| KORTE PLUS |
Saint Petersburg |
| KORTROS |
Moscow |
| Korf, PO |
Dzerzhinsky |
| Space communications |
Moscow |
| Cosmo-Design International |
Moscow |
| Kostromaavtomost |
Kostroma |
| ComCom Engineering |
Moscow |
| Kostromaoblgaz |
Kostroma |
| Kostroma restoration |
Kostroma |
| Kostromastroymontazh |
Kostroma |
| Kostromatonnelstroy |
Kostroma |
| Kostromacentrgazstroy |
Kostroma |
| Kostromaenergozashchita, Kostroma branch |
Kostroma |
| Kostromaenergozashchita, branch |
Nizhny Novgorod |
| Kostroma mechanized column N 23 |
Kostroma |
| Kostroma PMK-2 |
Kostroma |
| Kostroma Thermal Power Company |
Kostroma |
| Kosulinsky abrasive plant |
Verkhneye Dubrovo |
| Cottage-NN |
Kostroma |
| Crab Concrete |
Moscow |
| MKA paints |
Moscow |
| Colors of life |
Moscow |
| Kramarev Group |
Saint Petersburg |
| Crane-Spets Group |
Moscow |
| Kramarev Group |
Saint Petersburg |
| Paints of the Urals |
Chelyabinsk |
| Strong House |
Moscow |
| KrasKo |
Moscow |
| KRASBYT |
Moscow |
| Paints Svyatozar |
Moscow |
| KraftSpan |
Saint Petersburg |
| Krasalt |
Moscow |
| KRASOFF-STROY |
Serpukhov |
| Krasnogorsk Metal Products Plant |
Krasnogorsk |
| KrovGrad |
Tolyatti |
| Krasnaya Polyana Ceramic Factory |
Lobnya |
| Roofing Solutions |
Moscow |
| Roofing Master |
Moscow |
| Roof Forever |
Moscow |
| CrepeMetiz |
Moscow |
| Roof-Plus |
Ekaterinburg |
| KRYMLESSTROY |
Kazan |
| KROST |
Moscow |
| KS Positive |
Nizhny Novgorod |
| KSK |
Dzerzhinsk |
| KTM-Soyuz |
Dzerzhinsky |
| KSK-STROY |
Moscow |
| KSK - Krasnogorsk construction company |
Putilkovo |
| KS-stroy |
Volgograd |
| KUMBA |
Moscow |
| Well |
Moscow |
| Kurskgazproekt, enterprise |
Kursk |
| Kurskgazspetsstroy |
Kursk |
| Kurskgazstroy |
Kursk |
| Kurskgidrostroy |
Kursk |
| Kurskzhilstroy-1 |
Kursk |
