| WTraffic and Vehicle Pictures | |
| Picture Collection | |
| Japan | |
| Other private railways & industry | |
| K | ||
| Kamioka Railway | |
| Kanbara Railway | |
| Kashima Railway Company | |
| Kashima Rinkai Railway | |
| Keifuku Electric Railroad | |
| Kishu Railway | |
| Kiso forest railway | |
| Kitakyu (Kita-Osaka Kyuko Railway) | |
| Kitakinki Tango Railway | |
| Kobe Electric Railway (Shintetsu) | |
| Kobe Municipal Subway | |
| Konan Railway | |
| Kosaka Smelting & Refining | |
| Kotoden | |
| Kubiki Railway | |
| Kumagawa Railway | |
| Kumamoto Electric Railway (Kumaden) | |
| Kurobe Gorge Railway (762mm) | |
| Kyoto Municipal Subway |