HMS Grafton
| Name | HMS Grafton |
| Type | Protected cruiser |
| GRT | 7,350 tons |
| Country |  British |
| Built | 1892 |
| Builder | Thames Iron Works, Blackwall |
| Operator | Royal Navy |
| History |
U-boat attacks on Protected cruiser Grafton
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 11 Jun 1917 | UB 43 (Horst Obermüller) | Damaged | Torpedoed 150 miles E of Malta | 0 |
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