SS San Wilfrido was a 6,458 GRT steam-powered British tanker that was launched in February 1914 and sunk by a German mine less than six months later.

Armstrong, Whitworth & Co Ltd built her on the River Tyne for the Eagle Oil Transport Co Ltd. San Wilfrido struck the mine in the North Sea on 3 August 1914, one day before Britain declared war on Germany.

[1] Armstrong, Whitworth & Co Ltd built San Wilfrido at Low Walker as yard number 856.

[2] San Wilfrido's UK official number was 136658 and her code letters were JFHC.

[2][8] While navigating the Elbe about eight miles above Brunsbüttel she was given permission to proceed until Cuxhaven at the mouth of the North Sea.

Tugboat men of the harbour tried to warn San Wilfrido's master of the danger by shouting.

Ben Baxter, one of her wireless operators, made a model ship of San Wilfrido while interned, and after the war he submitted it to the Ruhleben Exhibition at Central Hall Westminster.