K
- Kyocera Display
- Keysight
- Keterex
- Kester
- Ka-Ro electronics
- Kamaya
- Knowles Dielectric Labs
- Knowles Novacap
- Knowles Syfer
- Knowles Voltronics
- Knowles
- Kavlico_Sensata
- Kyocera Electronic Components
- Kingbright
- Keystone Electronics
- Kinetic Technologies
- Kobiconn
- Kobitone
- KOA Speer_3
- KOA Speer_2
- KOA Speer_1
- Kycon