Lady Ismay
| Name | Lady Ismay |
| Type | Auxiliary minesweeper |
| GRT | 495 tons |
| Country |  British |
| Built | 1911 |
| Builder | Ailsa Shipbuilding Co., Ltd., Troon |
| Operator | Royal Navy |
| History | Peace-time operator: P. & A. Campbell, Ltd., Cardiff |
U-boat attacks on Auxiliary minesweeper Lady Ismay
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 21 Dec 1915 | UC 3 (Erwin Waßner) | Sunk | Mined 1 mile NW of the Long Sand LV | 51.48N, 01.39E | 18 |
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