Leinster
| Name | Leinster |
| Type | Passenger steamer |
| GRT | 2,646 tons |
| Country |  British |
| Built | 1897 |
| Builder | Laird Bros., Birkenhead |
| Operator | City of Dublin Steam Packet Company, Dublin |
| History |
U-boat attacks on Passenger steamer Leinster
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 10 Oct 1918 | UB 123 (Robert Ramm) | Sunk | 7 miles ESE of the Kish LV | 53.19N, 05.47W | Dublin - Holyhead | passengers | 530 |
| Casualty figure is approximate; the 176 figure in British Vessels Lost at Sea does not include military passengers. | ||||||||
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