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. She started modeling as a teenager in Japan, when she was 14 years old.

In 2006, she made a decision to move to Paris and develop her career on an international level. Soon after that, Tao made her debut on the European runways, one of the few prominent East Asian models of that era. In 2009, Tao moved to New York City.

Tao has worked in advertising and editorial projects. She has fronted campaigns such as Dolce & Gabbana with Mario Testino, Emporio Armani by Alasdair McLellan, Kenzo with Mario Sorrenti, and Tommy Hilfiger with Craig McDean. Editorially, she has shot for i-D Magazine, V Magazine, W Magazine, and various international editions of Harper's Bazaar and Vogue.

The November 2009 issue of Vogue Nippon (Japanese Vogue) is dedicated to Tao. She was the Japan Fashion Editor's Club "Model of the Year" and was one of Vogue Nippon's "Women of the Year" in 2010.