John Rettig
| Name | John Rettig |
| Type | Steamer |
| GRT | 1,809 tons |
| Country |  Swedish |
| Built | 1915 |
| Builder | Sørlandets Skibsbyg., Fevig |
| Operator | Ångfartygs A/B Gefle (E. Brodin), Gefle / Torö |
| History |
U-boat attacks on Steamer John Rettig
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 27 Jul 1918 | UB 107 (Eberhard von Prittwitz und Gaffron) | Sunk | Torpedoed 18 miles S of Flamborough Head | Göteborg - Hull | general cargo | 0 | |
| Master: E. Gram | ||||||||
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