Ondine
| Name | Ondine |
| Type | Sailing vessel (schooner) |
| GRT | 84 tons |
| Country |  French |
| Built | 1895 |
| Builder | ?; St Malo |
| Operator | Société La Morue Française et Sécheries de Fécamp |
| History | Master Victor Raymond plus 5 |
U-boat attacks on Sailing vessel (schooner) Ondine
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 12 Jul 1917 | U 34 (Johannes Klasing) | Sunk | Scuttled 5 miles N of Denia, SE Valencia, Spain | 0 |
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