SS Gwendolen (sometimes misspelled Guendolen and Gwendolyn) was a British steamship on Lake Nyasa that fought in the first naval action of World War I against the German steamship Hermann von Wissman which it caught on a slipway at Sphinxhafen, now known as Liuli. In the 1920s the Nyasaland Government Marine Transport ran a monthly sailing of SS Gwendolen from Fort Johnston carrying goods and passengers on a 15-day round trip around various ports on the lake.