Tao Okamoto (岡本 多緒 Okamoto Tao, born May 22, 1985) known professionally as Tao, is a Japanese actress and model, who is, alongside Ai Tominaga and Hiroko Matsumoto, one of the biggest models from Japan. In 2009, she was one of the faces of Ralph Lauren.

She made her film debut as the female lead Mariko Yashida in the 2013 film The Wolverine; and played Mercy Graves in the 2016 film Batman v Superman: Dawn of Justice. She has had recurring roles in the television series Hannibal, The Man in the High Castle, and Westworld. Tao was born in Chiba, Japan.