- Jamo
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- JBL
- Jeep
- Jeken
- Jetgaz
- Jlab Audio
- JOBO
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- Juki
- Junker
- Juno
- Juno-Electrolux
- Jura
- JVC
- jWIN
- Küppersbusch
- Kalkhoff
- KALORIK
- KAPERSKY
- Kapsys
- Kärcher
- Kaspersky
- Kaspersky Lab
- Kathrein
- Kawai
- Kawasaki
- Kelvinator
- Kenmore
- Kenwood
- KERIO TECHNOLOGIES
- KETRON
- Keystone
- KIA
- Kichler Lighting
- Kicker
- Kidde
- kiddy