Nicolaos
| Name | Nicolaos |
| Type | Steamer |
| GRT | 1,215 tons |
| Country |  Greek |
| Built | 1882 |
| Builder | Hodgson & Soulsby, Blyth |
| Operator | G. M. Pittas Bros. & Co. (D. N. Pittas), Syra |
| History |
U-boat attacks on Steamer Nicolaos
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 1 Mar 1917 | U 65 (Hermann von Fischel) | Sunk | South of Sardinia |
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