Lost and Found (simplified Chinese: 我叫刘跃进; traditional Chinese: 我叫劉躍進; pinyin: Wǒ jiào Liù Yùejìn) is a 2008 Chinese black comedy film and the third feature film directed by Ma Liwen. The film was based on the novel, I am Liu Yuejin by Liu Zhenyun and tells the story of a down-on-his-luck migrant cook who loses his life savings while in Beijing. The film is also known by the original Chinese title I am Liu Yuejin. The novel was published a mere three months before the film was released.

The film received a domestic opening in China in January 2008 before making limited appearances at various film festivals and screening events.

Lost and Found stars Li Yixiang, as the main role of Liu Yuejin though the film also boasts several cameos by Chinese filmmakers including Chen Daming (the director of Manhole) and Gao Qunshu (the director of The Tokyo Trial). It was partially produced by the state-subsidized China Film Group.