| Compañía ferroviaria |
Logotipo y vínculo |
Kalmar Länstrafik (KLT)  |
 |
Kantō Railway  |
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| Kashima Rinkai Railway |
 |
Kazakhstan Temir Zholy  |
 |
Keewatin Railway  |
 |
| Keihan Electric Railway |
 |
| Keikyu Corporation |
 |
| Keio Railway |
 |
| Keisei Railway |
 |
Kenya Railways  |
 |
Keolis Deutschland  |
 |
Kereta Api Indonesia (Persero)  |
 |
| Kereta Commuter Indonesia (KRL) |
 |
Keretapi Tanah Melayu Berhad (KTMB)  |
 |
| Kinki Nippon Railway (Kintetsu) |
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| Kishu Railway |
 |
Kiwi Rail  |
 |
| Kobe Electric Railway (Shintetsu) |
 |
Koleje Dolnośląskie  |
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| Koleje Mazowieckie |
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| Koleje Śląskie |
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| Kollektivtrafikförvaltningen UL |
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| Kominato Railway |
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| Konan Railway |
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Konkan Railway  |
 |
Korail ou Korea Railroad  |
 |
Korean National Railway  |
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Kowloon Canton Railway  |
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| Krösatågen |
 |
| Kumagawa Railway |
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| Kumamoto Railway |
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| Kurobe Gorge Railway |
 |
Kyrgyz Railways  |
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| Kyushu Railway Company (JR Kyushu) |
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