1800 series may refer to the following:
- Keihan 1800 series electric multiple unit train type operated by Keihan Electric Railway
- Keio 1800 series electric multiple unit train type operated by Keio Corporation
- Meitetsu 1800 series electric multiple unit train type
- Tobu 1800 series electric multiple unit train type
- Toyohashi 1800 series electric multiple unit train type operated by Toyohashi Railroad
This disambiguation page lists articles associated with the title 1800 series.
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