The Witness is a 2015 suspense crime drama film directed by Ahn Sang-hoon, starring Yang Mi and Lu Han. The film is a remake of the 2011 South Korean film Blind, also by the same director. It was released in China on October 30, 2015.

Yang Mi is a Chinese actress and singer. She made her acting debut in the historical television series Tang Ming Huang, and later received recognition for her leading roles in various television series such as Wang Zhaojun (2007), Chinese Paladin 3 (2009), Palace 1(2011), Beijing Love Story (2012), Swords of Legends (2014), The Interpreter (2016), Eternal Love (2017) and Legend of Fuyao (2018); as well as films Mysterious Island (2011), Tiny Times (2013–2015), and The Witness (2015). In 2017, she won the Best Actress award at the WorldFest Houston International Festival for her performance in Reset (2017).