K.C.C. Shokai Limited
Kakuta
Kamaki
Kanetec
Kanon
Kaseda
Kasuga
Kasuga Electric Works
Kato
KDS
Keiba
Keihoku Keiki
Keiyo Magnifiers
Kett
Kobayashi
KOD
Koden
Kokusai
Kontec
Kori Seiki
KTC
Kurita
Kuroda
Kyowa