| ID | Name | Type |
|---|---|---|
| #8111 | Klaus-Dieter Kaufmann | ? |
| #8112 | Klav | ? |
| #8113 | Klett | ? |
| #8114 | Klim | ? |
| #8115 | Klopov Yuri | + |
| #8116 | Klub Fifo | ? |
| #8118 | Kluwer Technische Boeken B.V. | Z |
| #8119 | Knaur | ? |
| #8120 | Knight Books | Z |
| #8121 | Knight's | ? |
| #8122 | Knighted Computers | Z |
| #8123 | Knightsoft | M |
| #8124 | Kno | ? |
| #8125 | Knopf | ? |
| #8126 | Knudde | ? |
| #8127 | Knutsoft | Z |
| #18729 | KoS | ? |
| #8128 | KoZa Software | Z |
| #8129 | Kobrahsoft | Z |
| #8130 | Kohlhammer | ? |