Hakuyo Maru (Japanese: ç½鷹丸) was a Japanese cargo ship of during World War II.
She was launched October 1942 at the Osaka shipyard of Ohara Shipbuilding & Steel Works for the benefit of shipping company Kyushu Yusen Co., Ltd. (), Fukuoka and completed in 1943.
On 10 June 1945, she was torpedoed and sunk by the submarine in the Sea of Okhotsk, west of Simushir Island at .