Nikolaos
| Name | Nikolaos |
| Type | Sailing vessel |
| GRT | 50 tons |
| Country |  Greek |
| Built | |
| Builder | |
| Operator | |
| History |
U-boat attacks on Sailing vessel Nikolaos
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 1 May 1918 | UC 74 (Hans Adalbert von der Lühe) | Sunk | Stopped and sunk by gunnery off Egypt | 31.31N, 29.14E |
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