HMS Blenheim was a Blake-class first class protected cruiser that served in the Royal Navy from 1890 to 1926. She was built by Thames Ironworks & Shipbuilding Company at Leamouth, London. The ship was named after the Battle of Blenheim.

The Thames Ironworks and Shipbuilding Company, Limited was a shipyard and iron works straddling the mouth of Bow Creek at its confluence with the River Thames, at Leamouth Wharf on the west side and at Canning Town on the east side. Its main activity was shipbuilding, but it also diversified into civil engineering, marine engines, cranes, electrical engineering and motor cars.