SS Djemnah was a French cargo-passenger ship, launched in 1875, that was sunk in the Mediterranean by the German submarine UB-105 during the First World War.

The Djemnah was built in La Ciotat in 1875 for the shipping company Messageries Maritimes.

[1] Filipino polymath and patriot Jose Rizal sailed aboard Djemnah during his trip to Europe to pursue medicine and continue the propaganda movement there with fellow Ilustrados in Spain.

On 6 July 1918, the ship left from Marseilles for Madagascar, with a crew of 153, 601 passengers and 530 tons of cargo.

On 14 July the ship was 69 nautical miles north from the Libyan coast when she was torpedoed at 21.32 by the German submarine UB-105 under command of Wilhelm Marschall.