- KOSCHE Holzwerkstoffe GmbH und Co.KG
- Koscon Industrial S.A.
- Koscon Industrial SA
- Kose
- KOSEDAG
- Koslight Service S.r.l.
- Koslight Service S.r.l.
- Kosloff Architecture
- KOSMA, SRL
- kosmo
- Kosmos Group
- Kòsmos Group
- Kosmos Project
- Kosmòs Soc. Coop.
- Kospel S.A.
- KOSPEL SA
- Kostal GmbH & Co. KG
- KOSTAL Industrie Electrik GmbH
- Kostal Italia s.r.l.
- KOSTAPANOS EVANGELOS
- KÖSTER ITALIA
- KOSTRUZIONI GENERALI TESTA SRL
- Kotero Design
- Koto Design
- KOTOBUKI CORPORATION/cozy & cozy
- KOTOBUKI Seating Asia Pacific
- Kotsons Pvt. Ltd.
- Kottmann Technology GmbH
- Kotton Grammer
- KOTUstudio
- Kotzolt - International GmbH
- Koudenburg & Elsinga
- kovboy
- koyori
- KOZ architectes