日本的演员 ，在日韩国人，本名张明男，生于1957年2月14日。

在《影子武士》里扮演织田信长。一直不太出名，但是演绎角色的功底确实非常扎实。在被黑泽明发现之后，参与了多部影视剧，饰演了一些角色。但是一直没有大红大紫起来。

2015年因在台湾桃园机场醉酒大闹，被马丁·斯科塞斯《沉默》剧组解除合约。

Daisuke Ryu was a Japanese actor born in Tokyo, Japan on 14 February 1957. He won the Japanese "best new actor" Blue ribbon award for his performance as the legendary warrior Oda Nobunaga in Akira Kurosawa's movie Kagemusha (The Shadow Warrior). Other notable performances include Saburo Ichimonji in the famous Kurosawa epic Ran and the legendary warrior monk Benkei in Sogo Ishii's critically acclaimed Gojoe (Gojō reisenki or The Spirit war chronicle).

He starred opposite Samantha Bond in the 1989 television serial The Ginger Tree, where he played Count Kentaro Kurihama. Based on the novel by Oswald Wynd, set in Japan at the turn of the century, it spans the period 1903 to the outbreak of the Second World War.

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