Lucknow
| Name | Lucknow |
| Type | Navy Trawler |
| GRT | 171 tons |
| Country |  British |
| Built | 1903 |
| Builder | Cook, Welton & Gemmell, Beverley |
| Operator | Royal Navy |
| History | Peace-time operator: Hull Steam Fishing & Ice Co. Ltd., Hull |
U-boat attacks on Navy Trawler Lucknow
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 18 May 1917 | UC 36 (Gustav Buch) | Sunk | Mined off Portsmouth, 2 miles W of the Owers LV | 9 |
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